Tüm alıştırma soruları

2195 soru

Soru 2141Soru
A renewable energy storage station manages a grid battery system with an initial energy reserve of E0=100 MWhE_0 = 100\text{ MWh}. At the end of each operating interval kk (for k=1,2,3,4k = 1, 2, 3, 4), the updated energy reserve EkE_k (in MWh) transitions according to the rule:
Ek=0.8Ek1+PkE_k = 0.8 E_{k-1} + P_k
where PkP_k represents the net energy added during interval kk. The net additions for the four intervals are P1=40 MWhP_1 = 40\text{ MWh}, P2=10 MWhP_2 = 10\text{ MWh}, P3=50 MWhP_3 = 50\text{ MWh}, and P4=20 MWhP_4 = 20\text{ MWh}.

Arrange the operating intervals in ascending order based on the battery energy reserve EkE_k measured at the end of each interval, from the lowest energy reserve to the highest energy reserve.

Öğeleri doğru sıraya koymak için sürükleyin

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Cevap

The correct sequence from lowest to highest energy reserve is End of Interval 2 (106 MWh), End of Interval 1 (120 MWh), End of Interval 4 (127.84 MWh), and End of Interval 3 (134.8 MWh).
Evaluating each recursive state step by step yields E1=120 MWhE_1 = 120\text{ MWh}, E2=106 MWhE_2 = 106\text{ MWh}, E3=134.8 MWhE_3 = 134.8\text{ MWh}, and E4=127.84 MWhE_4 = 127.84\text{ MWh}. Arranging these quantities from smallest to largest results in the sequence: End of Interval 2, End of Interval 1, End of Interval 4, and End of Interval 3.

Adım Adım Çözüm

1
Calculate the energy reserve at the end of Interval 1 (E1E_1)
E1=0.8(100)+40=80+40=120 MWhE_1 = 0.8(100) + 40 = 80 + 40 = 120\text{ MWh}
Apply the state transition formula using initial state E0=100 MWhE_0 = 100\text{ MWh} and addition P1=40 MWhP_1 = 40\text{ MWh}.
2
Calculate the energy reserve at the end of Interval 2 (E2E_2)
E2=0.8(120)+10=96+10=106 MWhE_2 = 0.8(120) + 10 = 96 + 10 = 106\text{ MWh}
Apply the state transition formula using state E1=120 MWhE_1 = 120\text{ MWh} and addition P2=10 MWhP_2 = 10\text{ MWh}.
3
Calculate the energy reserve at the end of Interval 3 (E3E_3)
E3=0.8(106)+50=84.8+50=134.8 MWhE_3 = 0.8(106) + 50 = 84.8 + 50 = 134.8\text{ MWh}
Apply the state transition formula using state E2=106 MWhE_2 = 106\text{ MWh} and addition P3=50 MWhP_3 = 50\text{ MWh}.
4
Calculate the energy reserve at the end of Interval 4 (E4E_4)
E4=0.8(134.8)+20=107.84+20=127.84 MWhE_4 = 0.8(134.8) + 20 = 107.84 + 20 = 127.84\text{ MWh}
Apply the state transition formula using state E3=134.8 MWhE_3 = 134.8\text{ MWh} and addition P4=20 MWhP_4 = 20\text{ MWh}.
5
Sort the computed values in ascending order
E2(106 MWh)<E1(120 MWh)<E4(127.84 MWh)<E3(134.8 MWh)E_2 (106\text{ MWh}) < E_1 (120\text{ MWh}) < E_4 (127.84\text{ MWh}) < E_3 (134.8\text{ MWh})
Comparing the values gives the exact ordered sequence: Interval 2, Interval 1, Interval 4, Interval 3.

Anahtar Kavram

Sequential Processes and State Transitions
Tahmini Süre:2m 0s
Soru 2142Soru

The table below presents operating and compliance metrics for seven municipal water treatment plants during 2025:

Plant NameDaily Capacity (MGD)Operating Cost ($/MG)Compliance Rate (%)Energy Consumption (kWh/MG)Staff Count
Clearwater Station4532098.4%1,45028
Blue River Plant8028099.1%1,20042
Oak Valley Works3041097.8%1,68022
Pine Creek Facility11025099.5%1,15050
Cedar Ridge Station6034098.9%1,38035
Ironwood Treatment2545096.5%1,75018
Laurel Heights7031098.7%1,30031

Match each statement on the left with its correct boolean evaluation outcome and quantitative justification on the right.

Soldaki öğeye tıklayın, sonra eşleşen sağdaki öğeye tıklayın

Öğeler

Statement I: The plant with the median Staff Count has an Operating Cost greater than the mean Operating Cost of all seven plants.
Statement II: For plants with a Compliance Rate above 98.5%, the ratio of total Daily Capacity to total Staff Count exceeds 2.0 MGD per staff member.
Statement III: When sorted in ascending order by Energy Consumption, the plant with the third-lowest energy usage has a higher Daily Capacity than the plant with the lowest Operating Cost.

Eşleşmeler

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Cevap

Statement I matches with the outcome stating it evaluates to FALSE (310<310 < 337.14); Statement II matches with the outcome stating it evaluates to TRUE (2.03 > 2.0); Statement III matches with the outcome stating it evaluates to FALSE (70 MGD < 110 MGD).
Each statement matches its exact evaluation outcome based on standard tabular data calculations: Statement I evaluates to False because 310perMGisbelowthe310 per MG is below the 337.14 per MG mean; Statement II evaluates to True because 320 divided by 158 equals approximately 2.03, which is greater than 2.0; Statement III evaluates to False because a capacity of 70 MGD is less than 110 MGD.

Adım Adım Çözüm

1
Evaluate Statement I by determining the median staff count and mean operating cost.
Sorted staff counts: 18, 22, 28, 31 (Laurel Heights), 35, 42, 50. Median plant is Laurel Heights with an operating cost of 310.Meanoperatingcost=(320+280+410+250+340+450+310)/7=2360/7310. Mean operating cost = (320 + 280 + 410 + 250 + 340 + 450 + 310) / 7 = 2360 / 7 ≈ 337.14. Since 310islessthan310 is less than 337.14, Statement I is False.
Identify the median position (4th out of 7) and compare its specific column value to the unweighted mean across all rows.
2
Evaluate Statement II by filtering plants with compliance > 98.5% and calculating aggregate capacity to staff ratio.
Qualifying plants are Blue River, Pine Creek, Cedar Ridge, and Laurel Heights. Total capacity = 80 + 110 + 60 + 70 = 320 MGD. Total staff = 42 + 50 + 35 + 31 = 158. Ratio = 320 / 158 ≈ 2.025 MGD/staff. Since 2.025 > 2.0, Statement II is True.
Filter rows according to a conditional threshold, aggregate columns across the selected subset, and perform ratio division.
3
Evaluate Statement III by sorting by Energy Consumption and comparing capacities of the 3rd-lowest energy plant and 1st-lowest cost plant.
Energy ordered plants: Pine Creek (1,150), Blue River (1,200), Laurel Heights (1,300). 3rd-lowest is Laurel Heights (Capacity = 70 MGD). Lowest operating cost plant is Pine Creek ($250, Capacity = 110 MGD). Comparing capacities: 70 MGD < 110 MGD. Statement III is False.
Sort table columns independently to locate specified ordinal positions (3rd-lowest energy, 1st-lowest cost) and compare their respective cross-column properties.

Anahtar Kavram

Multi-Statement Boolean Evaluation using tabular sorting, descriptive statistics, conditional filtering, and cross-column ratios.
Tahmini Süre:2m 0s
Soru 2143Soru

A pharmaceutical laboratory synthesizes two custom therapeutic compounds, Compound XX and Compound YY, in integer batch quantities during a single production cycle. Production is subject to the following resource and operational constraints:

- Bioreactor Time: Each batch of Compound XX requires 44 hours and each batch of Compound YY requires 33 hours. The laboratory has at most 4848 total hours of bioreactor time available.
- Specialized Solvent: Each batch of Compound XX requires 33 liters and each batch of Compound YY requires 55 liters. The total solvent supply is capped at 5555 liters.
- Catalyst Stability Limit: To prevent reactive degradation, the number of batches of Compound YY produced cannot exceed twice the number of batches of Compound XX plus 11 (Y2X+1Y \le 2X + 1).

Each batch of Compound XX generates a net profit of $12,000\$12,000, and each batch of Compound YY generates a net profit of $14,000\$14,000.

What is the maximum total net profit, in dollars, that the laboratory can achieve within these combined production constraints?

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Cevap: $172,000\$172,000

Cevap

The maximum total net profit achievable under all constraints is $172,000\$172,000, obtained by producing 55 batches of Compound XX and 88 batches of Compound YY.
The production plan of 55 batches of Compound XX and 88 batches of Compound YY satisfies all given constraints: Bioreactor time (4(5)+3(8)=44484(5) + 3(8) = 44 \le 48 hours), Solvent volume (3(5)+5(8)=55553(5) + 5(8) = 55 \le 55 liters), and Catalyst stability (82(5)+1=118 \le 2(5) + 1 = 11). This combination yields the maximum valid profit of 5×$12,000+8×$14,000=$172,0005 \times \$12,000 + 8 \times \$14,000 = \$172,000.

Adım Adım Çözüm

1
Formulate the linear inequalities representing the system constraints.
Bioreactor constraint: 4X+3Y484X + 3Y \le 48; Solvent constraint: 3X+5Y553X + 5Y \le 55; Catalyst constraint: Y2X+1Y \le 2X + 1; Non-negativity and integer constraints: X,YZ0X, Y \in \mathbb{Z}_{\ge 0}. Objective function: Maximize P=12000X+14000YP = 12000X + 14000Y.
Establishing the mathematical boundaries of the feasible region for integer optimization.
2
Find the intersection point of the two primary resource constraint boundaries (4X+3Y=484X + 3Y = 48 and 3X+5Y=553X + 5Y = 55).
Multiplying 4X+3Y=484X + 3Y = 48 by 55 yields 20X+15Y=24020X + 15Y = 240. Multiplying 3X+5Y=553X + 5Y = 55 by 33 yields 9X+15Y=1659X + 15Y = 165. Subtracting the two equations gives 11X=75    X=75/116.8211X = 75 \implies X = 75/11 \approx 6.82, leading to Y=76/116.91Y = 76/11 \approx 6.91.
Identifies the continuous optimal vertex of the system to narrow down nearby integer search points.
3
Test nearby integer pairs (X,Y)(X, Y) within the feasible region.
For X=6X = 6, max YY under solvent limit is (5518)/5=7\lfloor(55 - 18)/5\rfloor = 7. Check (6,7)(6, 7): 4(6)+3(7)=45484(6)+3(7)=45 \le 48, 3(6)+5(7)=53553(6)+5(7)=53 \le 55, 72(6)+1=137 \le 2(6)+1=13. Profit: 12000(6)+14000(7)=$170,00012000(6)+14000(7) = \$170,000.
For X=5X = 5, max YY under solvent limit is (5515)/5=8\lfloor(55 - 15)/5\rfloor = 8. Check (5,8)(5, 8): 4(5)+3(8)=44484(5)+3(8)=44 \le 48, 3(5)+5(8)=55553(5)+5(8)=55 \le 55, 82(5)+1=118 \le 2(5)+1=11. Profit: 12000(5)+14000(8)=$172,00012000(5)+14000(8) = \$172,000.
For X=4X = 4, max YY under solvent limit is (5512)/5=8\lfloor(55 - 12)/5\rfloor = 8. Profit: 12000(4)+14000(8)=$160,00012000(4)+14000(8) = \$160,000.
For X=7X = 7, max YY under bioreactor limit is (4828)/3=6\lfloor(48 - 28)/3\rfloor = 6. Check (7,6)(7, 6): 4(7)+3(6)=46484(7)+3(6)=46 \le 48, 3(7)+5(6)=51553(7)+5(6)=51 \le 55. Profit: 12000(7)+14000(6)=$168,00012000(7)+14000(6) = \$168,000.
Evaluates candidate lattice points on the boundary of the feasible integer region.
4
Compare profit totals among all valid integer combinations.
The combination (5,8)(5, 8) yields the maximum valid profit of $172,000\$172,000.
Confirms the global maximum integer solution under all joint bounded constraints.

Anahtar Kavram

Optimization under Integer and Joint Bounded Constraints
Soru 2144Soru

The table below lists operational data for seven regional hydroelectric power stations:

Station NameRiver SystemInstalled Capacity (MW)Annual Generation (GWh)Operating Efficiency (%)
Apex DamColumbia4501,80088%
Beacon HydroSnake3201,44092%
Crest FallsColumbia5001,95085%
Delta FlowMissouri2801,12090%
Eagle RidgeSnake4001,60086%
Frontier HydroMissouri3501,47091%
Glacier PeakColumbia4201,76489%

Statement: If the table is sorted in ascending alphabetical order by River System, and any ties in River System are broken by sorting Operating Efficiency in descending order, Beacon Hydro will appear immediately above Eagle Ridge in the sorted list.

Cevabı ve açıklamayı göster

Cevap: True

Cevap

True
Sorting primarily by River System (alphabetical) places the two Snake stations at the bottom of the table. Breaking the tie by sorting Operating Efficiency descending places Beacon Hydro (92%) above Eagle Ridge (86%), confirming Beacon Hydro immediately precedes Eagle Ridge.

Adım Adım Çözüm

1
Group rows by the primary sort key: River System in ascending alphabetical order.
The river systems are ordered as Columbia, then Missouri, then Snake.
Alphabetical sorting orders C before M, and M before S.
2
Sort the entries within each river system group by the tie-breaker rule: Operating Efficiency in descending order.
Columbia group: Glacier Peak (89%), Apex Dam (88%), Crest Falls (85%). Missouri group: Frontier Hydro (91%), Delta Flow (90%). Snake group: Beacon Hydro (92%), Eagle Ridge (86%).
Descending efficiency puts higher percentage values above lower percentage values within each group.
3
Combine the ordered groups to form the complete sorted list.
Position 1: Glacier Peak, Position 2: Apex Dam, Position 3: Crest Falls, Position 4: Frontier Hydro, Position 5: Delta Flow, Position 6: Beacon Hydro, Position 7: Eagle Ridge.
Evaluating positions shows Beacon Hydro (6th) is placed directly above Eagle Ridge (7th).

Anahtar Kavram

Sorting and Multi-Column Ordering
Soru 2145Soru

The table below presents 2025 operational and patient triage metrics for seven regional emergency departments:

Hospital NameAnnual Patient Volume (thousands)Median Wait Time (min)Mean Treatment Duration (hrs)Left Without Being Seen (LWBS) Rate30-Day Readmission Rate
St. Jude Regional48243.51.8%4.2%
Metro Central85424.83.5%5.8%
Valley General62304.02.4%4.5%
Highland Medical35183.21.2%3.8%
Pinecrest Community28152.80.9%3.5%
University Health92485.24.1%6.2%
Riverside Care54283.82.1%4.9%

Evaluate whether the following statement is True or False:
"For every hospital with an annual patient volume exceeding 50,000, the ratio of Median Wait Time (in minutes) to Mean Treatment Duration (in hours) is strictly greater than 7.0."

Cevabı ve açıklamayı göster

Cevap: True

Cevap

True. All four hospitals with annual patient volume exceeding 50,000 have a wait-to-treatment duration ratio greater than 7.0.
Filtering the table for hospitals with annual patient volume exceeding 50 thousand isolates Metro Central, Valley General, University Health, and Riverside Care. Calculating the ratio of median wait time (minutes) to mean treatment duration (hours) yields 8.75, 7.50, 9.23, and 7.37 respectively. Because every single one of these values exceeds 7.0, the statement is True.

Adım Adım Çözüm

1
Filter the dataset based on the volume condition.
Identified four hospitals with annual volume > 50k: Metro Central (85), Valley General (62), University Health (92), and Riverside Care (54).
The statement specifies a condition that applies only to hospitals with patient volume over 50 thousand.
2
Calculate the ratio of Median Wait Time (minutes) to Mean Treatment Duration (hours) for each qualifying hospital.
Metro Central = 8.75; Valley General = 7.50; University Health ≈ 9.23; Riverside Care ≈ 7.37.
Determines the exact numerical value of the ratio for each qualifying row.
3
Compare each calculated ratio to the threshold value of 7.0.
All four calculated ratios are strictly greater than 7.0.
Verifies whether the universal claim ('for every hospital...') holds true.

Anahtar Kavram

Multi-Statement Boolean Evaluation via Conditional Data Filtering and Ratio Analysis
Soru 2146Soru

The table below displays performance metrics for seven regional freight rail terminals.

Terminal IDRegionCargo Handled (Thousand Tons)On-Time Dispatch Rate (%)Operating Cost per Ton ($)
T-1East45092.5%14.20
T-2West62088.0%11.50
T-3North45094.0%15.80
T-4South58092.5%12.10
T-5East62091.5%10.80
T-6North39095.5%16.40
T-7West58089.0%13.00

If the table is sorted in descending order by Cargo Handled, and any ties are broken by sorting in descending order by On-Time Dispatch Rate, which terminal will be listed fourth from the top?

Cevabı ve açıklamayı göster

Cevap: Terminal T-7

Cevap

Terminal T-7
Primary sorting by Cargo Handled in descending order groups the top two tiers as 620 thousand tons (T-5, T-2) and 580 thousand tons (T-4, T-7). Secondary sorting by On-Time Dispatch Rate in descending order ranks T-4 (92.5%) above T-7 (89.0%) within the 580 thousand tons group. This places T-5 first, T-2 second, T-4 third, and Terminal T-7 fourth.

Adım Adım Çözüm

1
Group and order the table by the primary column: Cargo Handled (descending).
Highest tier (620 thousand tons): T-2, T-5; Second tier (580 thousand tons): T-4, T-7; Third tier (450 thousand tons): T-1, T-3; Lowest tier (390 thousand tons): T-6.
The primary sort requires arranging entries from largest to smallest cargo volume.
2
Apply the secondary sort criterion (On-Time Dispatch Rate descending) to break ties in each cargo tier.
Tier 1 (620 thousand tons): T-5 (91.5%) is 1st, T-2 (88.0%) is 2nd. Tier 2 (580 thousand tons): T-4 (92.5%) is 3rd, T-7 (89.0%) is 4th.
When primary values are identical, higher on-time dispatch rates take precedence.
3
Identify the item in the 4th position of the fully sorted list.
The 4th terminal in sequence is Terminal T-7.
Terminal T-7 is second in the 580 thousand tons tier due to its 89.0% dispatch rate compared to T-4's 92.5%.

Anahtar Kavram

Multi-Column Sorting and Tie-Breaking
Tahmini Süre:1m 30s
Soru 2147Soru

For decades, geophysicists attributed intraplate volcanic hotspots—such as the Hawaiian chain—to deep mantle plumes carrying superheated material directly from the core-mantle boundary. However, skeptics of the plume hypothesis argued that localized upper-mantle processes, such as tectonic plate shearing and shallow stress-induced fracturing, could independently generate volcanism by melting shallow asthenospheric mantle without requiring thermal anomalies from the deep Earth. To counter this shallow-origin model, plume theorists highlighted seismic tomography imaging that revealed narrow, vertically elongated columns of low seismic velocity extending down to the lower mantle, interpreting these anomalies as hot, ascending plume conduits.

Recently, proponents of the shallow-process model offered a counterargument, demonstrating that seismic velocity anomalies in the lower mantle might instead reflect compositional heterogeneity—such as subducted oceanic crust rich in dense minerals—rather than high temperatures. They argued that such mineralogical variations could slow seismic waves without implying upward thermal transport, thereby undermining the primary empirical evidence for deep plumes.

Nevertheless, recent high-resolution geodynamical simulations provide a persuasive rebuttal to this counterargument. By integrating mineral physics data with thermal transport dynamics, the simulations show that purely compositional anomalies would cause distinct shear-wave anisotropy and high seismic attenuation patterns that are absent in the observed Hawaiian seismic profiles. Furthermore, the simulations demonstrate that only an active thermal buoyancy flux can account for both the observed swell elevation of the ocean floor and the precise geochemical ratios of helium isotopes found in hotspot lavas. Consequently, the rebuttal demonstrates that compositional variations alone cannot explain the full suite of geophysical observations.

Based on the passage, which of the following best characterizes how the high-resolution geodynamical simulations address the shallow-process model's counterargument regarding seismic tomography?

Cevabı ve açıklamayı göster

Cevap: They neutralize the counterargument by demonstrating that compositional anomalies produce specific seismic patterns absent in actual observation and fail to explain key topographic and isotopic evidence.

Cevap

The correct answer is the option stating that the simulations neutralize the counterargument by demonstrating that compositional anomalies produce specific seismic patterns absent in actual observation and fail to explain key topographic and isotopic evidence.
The correct response accurately synthesizes the two main points of the final paragraph: the simulations reveal that a purely compositional explanation predicts seismic anomalies (shear-wave anisotropy and high attenuation) that do not appear in real Hawaiian profiles, and that compositional variations alone cannot account for physical swell elevation or helium isotope data.

Adım Adım Çözüm

1
Identify the counterargument raised by shallow-model proponents
Shallow-model proponents argued that low seismic velocity in the lower mantle stems from mineral composition (subducted crust) rather than high thermal temperature.
Understanding the opponent's objection is essential before evaluating how the rebuttal addresses it.
2
Analyze the rebuttal provided by the high-resolution geodynamical simulations in the final paragraph
The simulations show two things: (1) purely compositional anomalies would create shear-wave anisotropy and attenuation patterns NOT found in actual Hawaiian profiles, and (2) thermal buoyancy is required to explain ocean floor swell elevation and helium isotope ratios.
This details the two-pronged logical refutation used by plume theorists.
3
Match the logical function of the simulations with the correct choice
The option describing how the simulations show unobserved seismic patterns and an inability to account for topographic/isotopic evidence accurately summarizes the rebuttal.
This choice captures both aspects of the passage's counterargument evaluation without overstating stance or misattributing claims.

Anahtar Kavram

Evaluating the logical force and scope of a scientific rebuttal against an opposing counterargument
Soru 2148Soru

An earth-observation satellite payload operator allocates integer numbers of channels to two operational payload modes: High-Resolution Imaging (II) and Atmospheric Sounding (SS). Operational parameters and resource bounds are specified as follows:

- Bandwidth: Each imaging channel requires 15 MHz15\text{ MHz} and each sounding channel requires 10 MHz10\text{ MHz}. Total available payload bandwidth is at most 210 MHz210\text{ MHz}.
- Power: Each imaging channel consumes 40 W40\text{ W} and each sounding channel consumes 15 W15\text{ W}. Total available power budget is at most 440 W440\text{ W}.
- Mission Minimums: The satellite must operate at least 22 imaging channels (I2I \ge 2) and at least 44 sounding channels (S4S \ge 4).
- Buffer Constraint: The number of sounding channels cannot exceed twice the number of imaging channels (S2IS \le 2I).

Match each payload optimization target on the left with its corresponding integer channel count on the right.

Soldaki öğeye tıklayın, sonra eşleşen sağdaki öğeye tıklayın

Öğeler

Maximum possible number of Imaging channels (II)
Maximum possible number of Sounding channels (SS)
Number of Sounding channels (SS) that maximizes daily data return (R=70I+20SR = 70I + 20S Gbit/day)

Eşleşmeler

Cevabı ve açıklamayı göster

Cevap

The maximum possible number of Imaging channels (II) is 9. The maximum possible number of Sounding channels (SS) is 12. The number of Sounding channels (SS) that maximizes daily data return is 5.
Matching the maximum imaging channels (II) to 9 is correct because I=10I = 10 forces S2S \le 2, violating S4S \ge 4, whereas I=9I = 9 is fully feasible with S=5S = 5. Matching the maximum sounding channels (SS) to 12 is correct because at (6,12)(6, 12), bandwidth, power, and buffer constraints are simultaneously satisfied. Matching the sounding channels for maximum data return to 5 is correct because the function R=70I+20SR = 70I + 20S reaches its peak of 730 Gbit/day at (9,5)(9, 5).

Adım Adım Çözüm

1
Formulate the algebraic system of inequality constraints.
Bandwidth: 15I+10S210    3I+2S4215I + 10S \le 210 \implies 3I + 2S \le 42. Power: 40I+15S440    8I+3S8840I + 15S \le 440 \implies 8I + 3S \le 88. Bounds: I2I \ge 2, S4S \ge 4, and S2IS \le 2I.
Converting narrative bounds into simplified algebraic inequalities facilitates evaluating integer extreme points.
2
Find the maximum feasible value for Imaging channels (II).
If I=10I = 10, power requires 8(10)+3S88    3S8    S28(10) + 3S \le 88 \implies 3S \le 8 \implies S \le 2, which violates the minimum requirement S4S \ge 4. If I=9I = 9, power requires 8(9)+3S88    3S16    S58(9) + 3S \le 88 \implies 3S \le 16 \implies S \le 5. With S=4S = 4 or S=5S = 5, bandwidth gives 3(9)+2(5)=37423(9) + 2(5) = 37 \le 42 and S2(9)S \le 2(9) holds. Thus, max I=9I = 9.
Determining the upper bound of II requires testing larger integer values of II while ensuring S4S \ge 4 is not violated.
3
Find the maximum feasible value for Sounding channels (SS).
Since S2IS \le 2I, SS is constrained by II. Testing I=6I = 6: bandwidth gives 3(6)+2S42    2S24    S123(6) + 2S \le 42 \implies 2S \le 24 \implies S \le 12. Power gives 8(6)+3S88    3S40    S13.338(6) + 3S \le 88 \implies 3S \le 40 \implies S \le 13.33. Buffer gives S2(6)=12S \le 2(6) = 12. At (6,12)(6, 12), all constraints hold (18+24=424218+24=42 \le 42, 48+36=848848+36=84 \le 88, 121212 \le 12). Thus, max S=12S = 12.
Maximizing SS requires balancing the ratio constraint S2IS \le 2I against bandwidth and power limits.
4
Maximize the objective function R(I,S)=70I+20SR(I, S) = 70I + 20S over all feasible boundary points.
Evaluating candidate integer vertex points: R(9,5)=70(9)+20(5)=730R(9, 5) = 70(9) + 20(5) = 730; R(9,4)=710R(9, 4) = 710; R(8,8)=720R(8, 8) = 720; R(7,10)=690R(7, 10) = 690; R(6,12)=660R(6, 12) = 660. The maximum data return occurs at (9,5)(9, 5), where S=5S = 5.
Comparing total return at all boundary points identifies the global integer maximum.

Anahtar Kavram

Linear Programming and Integer Bounded Optimization
Soru 2149Soru

Historically, historical linguists reconstructed ancestral proto-languages primarily through the qualitative comparative method—painstakingly comparing phonological shifts and lexical cognates across related tongues to establish family trees. In recent decades, however, computational linguists have increasingly deployed phylogenetic cladistic algorithms, originally developed for evolutionary biology, to construct automated linguistic trees based on statistical lexical similarity. Proponents argue that computational phylogenetics removes subjective bias, processes massive datasets far beyond human capacity, and yields quantifiable confidence intervals for linguistic splits.

Despite these computational advances, a vocal contingent of traditional philologists cautions against over-reliance on algorithmic models. They contend that biological cladistics assumes vertical transmission—gene transfer strictly from parent to offspring—an assumption that fails when applied to human language. Languages frequently undergo horizontal transfer, or lateral borrowing, through trade, conquest, and cultural diffusion, thereby blurring lineage lines in ways standard phylogenetic software cannot adequately differentiate from genetic inheritance. For example, when two distantly related languages exchange structural traits or extensive vocabulary, a cladistic algorithm may incorrectly cluster them as close evolutionary siblings.

To reconcile this methodological divide, recent scholarship proposes a hybrid analytical framework. Rather than discarding computational tools or treating their output as infallible truth, researchers are integrating network-based models—such as neighbor-net graphs—with traditional qualitative scrutiny. These hybrid systems account for both vertical descent and horizontal reticulation by mapping loanwords as intersecting lateral vectors while preserving phylogenetic nodes for core vocabulary. Consequently, the rhetorical structure of modern linguistic debate is shifting from an adversarial choice between manual erudition and statistical computation toward a nuanced, multi-layered synthesis that utilizes algorithms to generate probabilistic hypotheses while relying on qualitative historical contexts to filter out lateral noise.

Which of the following best describes the overall logical structure of the passage?

Cevabı ve açıklamayı göster

Cevap: It outlines a traditional methodology, presents a modern computational alternative alongside its primary theoretical limitation, and resolves the debate by describing an integrated approach that combines both methods.

Cevap

The passage outlines a traditional methodology, presents a modern computational alternative alongside its primary theoretical limitation, and resolves the debate by describing an integrated approach that combines both methods.
The correct answer accurately traces the tripartite rhetorical plan of the passage: Paragraph 1 introduces traditional comparative linguistics and the emergence of computational phylogenetics; Paragraph 2 presents the critical limitation of computational models regarding lateral borrowing; Paragraph 3 concludes by introducing a hybrid framework that synthesizes both qualitative and quantitative approaches.

Adım Adım Çözüm

1
Analyze the purpose and function of the first paragraph.
The first paragraph establishes the traditional qualitative comparative method and introduces the modern computational alternative (phylogenetic cladistic algorithms) along with its claimed benefits.
Understanding paragraph-level roles is essential for mapping overall logical flow.
2
Analyze the purpose and function of the second paragraph.
The second paragraph introduces a key limitation of the computational approach—namely, that human languages undergo horizontal transfer (lateral borrowing) which biological cladistics fails to account for.
Identifying theoretical counterarguments clarifies why the initial computational model is incomplete.
3
Analyze the purpose and function of the third paragraph and synthesize the passage structure.
The final paragraph presents a hybrid analytical framework (combining network models and qualitative scrutiny) that resolves the conflict, establishing the passage's overall trajectory from tradition to innovation, critique, and eventual synthesis.
Determining how the passage resolves the tension provides the complete rhetorical plan.

Anahtar Kavram

Analyzing Passage Rhetorical Plan and Logical Structure
Soru 2150Soru

Consider the following argument:

A commercial aquaculture firm plans to replace traditional fishmeal with a novel kelp-based bio-feed in its ocean net-pen salmon farms. Management reasons that because the bio-feed increased salmon growth rates by 15 percent in land-based tank trials, switching to the bio-feed in ocean net-pen operations will significantly increase the farm's overall annual net profits.

Statement: The argument depends on the unstated assumption that salmon raised in ocean net-pens absorb nutrients from the kelp-based bio-feed with sufficient efficiency to maintain a growth advantage comparable to that observed in land-based tanks.

Cevabı ve açıklamayı göster

Cevap: True

Cevap

The statement is TRUE because the argument relies on the necessary assumption that growth enhancements observed in land-based trials will translate to open ocean net-pen environments.
The argument projects higher profitability based entirely on growth rate gains observed in land-based tank trials. For this extrapolation to hold, the author must assume that salmon in ocean net-pens can digest and absorb the bio-feed effectively enough to reproduce these growth gains. Negating this statement eliminates the expected benefit, causing the conclusion to fail.

Adım Adım Çözüm

1
Deconstruct the argument into premises and conclusion.
Premise: Kelp-based bio-feed enhanced salmon growth rates by 15% in land-based tank trials. Conclusion: Replacing traditional fishmeal with bio-feed in ocean net-pen operations will increase overall annual net profits.
Identifying the components reveals the underlying gap between the test environment (tanks) and the operational environment (ocean net-pens).
2
Identify the unstated logical bridge required to connect the premise to the conclusion.
The author must assume that the performance gains observed in land-based tanks will hold true under open ocean net-pen conditions.
An assumption is an unstated premise required for the conclusion to remain valid.
3
Apply the Negation Test to the statement.
Negated statement: Salmon in ocean net-pens do NOT absorb nutrients from the bio-feed with sufficient efficiency to maintain a growth advantage comparable to land-based tanks.
If the negated statement is true, the growth advantage vanishes in ocean net-pens, rendering the expected profit increase unsupported and invalidating the argument.

Anahtar Kavram

Identifying Unstated Assumptions (Environment Transfer & Negation Test)
Soru 2151Soru

An industrial water desalination facility routes seawater through a three-stage membrane filtration process (k=1,2,3k = 1, 2, 3). At stage k=0k = 0 (the initial feed stage), the water has a salt concentration of C0=800 ppmC_0 = 800\text{ ppm} and a flow rate of F0=120 liters/minF_0 = 120\text{ liters/min}.

At each subsequent stage kk (where k=1,2,3k = 1, 2, 3), the state of the water is updated according to the following sequential rules:
- Salt concentration: Ck=0.5Ck120 ppmC_k = 0.5 C_{k-1} - 20\text{ ppm}
- Flow rate: Fk=Fk115 liters/minF_k = F_{k-1} - 15\text{ liters/min}

Which of the following statements regarding the system's state transitions across the stages are true? Select all that apply.

Geçerli olan tümünü seçin

Cevabı ve açıklamayı göster

Cevap: At the end of Stage 2 (k=2k = 2), the salt concentration of the water is 170 ppm170\text{ ppm}.; At the end of Stage 3 (k=3k = 3), the water flow rate is 75 liters/min75\text{ liters/min}.

Cevap

The correct statements are the one indicating a salt concentration of 170 ppm at Stage 2 and the one indicating a flow rate of 75 liters/min at Stage 3.
Evaluating each transition step sequentially gives C_1 = 380, C_2 = 170, and C_3 = 65 for salt concentration, and F_1 = 105, F_2 = 90, and F_3 = 75 for flow rate. The statement asserting a salt concentration of 170 ppm at Stage 2 and the statement asserting a flow rate of 75 liters/min at Stage 3 correctly reflect these evaluations.

Adım Adım Çözüm

1
Calculate state metrics for Stage 1 (k = 1)
C_1 = 0.5(800) - 20 = 380 ppm; F_1 = 120 - 15 = 105 liters/min
Apply the recursive transition functions once from initial state k = 0.
2
Calculate state metrics for Stage 2 (k = 2)
C_2 = 0.5(380) - 20 = 170 ppm; F_2 = 105 - 15 = 90 liters/min
Apply the recursive transition functions to the Stage 1 outputs.
3
Calculate state metrics for Stage 3 (k = 3)
C_3 = 0.5(170) - 20 = 65 ppm; F_3 = 90 - 15 = 75 liters/min
Apply the recursive transition functions to the Stage 2 outputs.
4
Verify each statement against calculated values
Stage 2 salt concentration is 170 ppm (True) and Stage 3 flow rate is 75 liters/min (True).
Identify all statements that match the calculated sequence values.

Anahtar Kavram

Multi-stage recursive state evaluation and linear parameter transition tracking.
Soru 2152Soru

A telecommunications company deploys two installation teams, Team Alpha and Team Beta, to lay fiber-optic cable across a rural region containing both rocky terrain and flat terrain.

- Team Alpha lays cable at a constant rate of 400400 meters per day in rocky terrain and 600600 meters per day in flat terrain. Over a project lasting exactly 2020 working days, Team Alpha laid a total of 10,40010,400 meters of cable.
- Team Beta lays cable at a constant rate of 300300 meters per day in rocky terrain and 700700 meters per day in flat terrain. Over a project also lasting exactly 2020 working days, Team Beta laid a total of 11,60011,600 meters of cable.

Based on the information provided, which of the following correctly pairs the number of days Team Alpha worked in rocky terrain with the number of days Team Beta worked in rocky terrain?

Cevabı ve açıklamayı göster

Cevap: Team Alpha: 8 days; Team Beta: 6 days

Cevap

Team Alpha worked 8 days in rocky terrain and Team Beta worked 6 days in rocky terrain.
For Team Alpha, setting 400dA+600(20dA)=10,400400 d_A + 600(20 - d_A) = 10,400 simplifies to 200dA=1,600200 d_A = 1,600, giving dA=8d_A = 8 days in rocky terrain. For Team Beta, setting 300dB+700(20dB)=11,600300 d_B + 700(20 - d_B) = 11,600 simplifies to 400dB=2,400400 d_B = 2,400, giving dB=6d_B = 6 days in rocky terrain. Thus, the pairing 'Team Alpha: 8 days; Team Beta: 6 days' is correct.

Adım Adım Çözüm

1
Set up the work-rate equation for Team Alpha.
Let dAd_A be the number of days Team Alpha worked in rocky terrain. The days worked in flat terrain is (20dA)(20 - d_A). The equation is 400dA+600(20dA)=10,400400 d_A + 600(20 - d_A) = 10,400.
Total distance laid equals rate in rocky terrain times rocky days plus rate in flat terrain times flat days.
2
Solve for dAd_A (Team Alpha's rocky terrain days).
400dA+12,000600dA=10,400    12,000200dA=10,400    200dA=1,600    dA=8400 d_A + 12,000 - 600 d_A = 10,400 \implies 12,000 - 200 d_A = 10,400 \implies 200 d_A = 1,600 \implies d_A = 8 days.
Simplifying the algebraic equation yields the exact number of rocky terrain days for Team Alpha.
3
Set up the work-rate equation for Team Beta.
Let dBd_B be the number of days Team Beta worked in rocky terrain. The days worked in flat terrain is (20dB)(20 - d_B). The equation is 300dB+700(20dB)=11,600300 d_B + 700(20 - d_B) = 11,600.
Total distance laid equals rate in rocky terrain times rocky days plus rate in flat terrain times flat days for Team Beta.
4
Solve for dBd_B (Team Beta's rocky terrain days).
300dB+14,000700dB=11,600    14,000400dB=11,600    400dB=2,400    dB=6300 d_B + 14,000 - 700 d_B = 11,600 \implies 14,000 - 400 d_B = 11,600 \implies 400 d_B = 2,400 \implies d_B = 6 days.
Simplifying the algebraic equation yields the exact number of rocky terrain days for Team Beta.

Anahtar Kavram

Solving simultaneous linear work-rate problems with two terrain types and time constraints.
Tahmini Süre:2m 0s
Soru 2153Soru

The table below displays Q2 2026 performance data for seven autonomous cargo drone fleets operated by a logistics provider:

Fleet IDTotal Flight HoursOn-Time Delivery Rate (%)Payload Capacity (kg)Operating Cost per Km ($)
Alpha-142094.5%15012.40
Beta-255091.0%20015.80
Gamma-331096.0%12010.50
Delta-460088.5%25018.20
Epsilon-548093.0%18014.10
Zeta-639097.5%14011.80
Eta-751089.0%22016.50

Consider the following three statements:

I. The median Operating Cost per Km among fleets with a Payload Capacity of at least 150 kg is greater than $15.00.
II. Among fleets with an On-Time Delivery Rate above 92.0%, the fleet with the lowest Total Flight Hours also has the lowest Operating Cost per Km.
III. The mean Total Flight Hours for fleets with a Payload Capacity under 180 kg is greater than 400 hours.

Which of the statements evaluate to True based on the table?

Cevabı ve açıklamayı göster

Cevap: Exactly Statements I and II are true

Cevap

Statements I and II are True, while Statement III is False.
Evaluating each statement systematically shows that Statement I is True because the sorted costs for eligible fleets are 12.40,12.40, 14.10, 15.80,15.80, 16.50, 18.20,givingamedianof18.20, giving a median of 15.80 (which exceeds 15.00).StatementIIisTruebecauseGamma3meetsthedeliveryratethreshold(>92.015.00). Statement II is True because Gamma-3 meets the delivery rate threshold (> 92.0%) and holds both the minimum flight hours (310) and minimum operating cost ( 10.50) among those fleets. Statement III is False because the filtered fleets (Alpha-1, Gamma-3, Zeta-6) have a mean flight hour of 373.33 hours, which is less than 400 hours. Thus, exactly Statements I and II are true.

Adım Adım Çözüm

1
Evaluate Statement I by filtering and sorting Operating Cost per Km for fleets with Payload Capacity 150 kg\ge 150\text{ kg}.
Fleets meeting the condition are Alpha-1 (150 kg), Beta-2 (200 kg), Delta-4 (250 kg), Epsilon-5 (180 kg), and Eta-7 (220 kg). Their operating costs sorted from lowest to highest are 12.40,12.40, 14.10, 15.80,15.80, 16.50, 18.20.Themedianofthese5valuesisthe3rdvalue,whichis18.20. The median of these 5 values is the 3rd value, which is 15.80. Since 15.80>15.80 > 15.00, Statement I is TRUE.
Finding the median of an odd number of items requires ordering the subset values and taking the middle element.
2
Evaluate Statement II by filtering fleets with On-Time Delivery Rate >92.0%> 92.0\%.
Fleets meeting the condition are Alpha-1 (94.5%), Gamma-3 (96.0%), Epsilon-5 (93.0%), and Zeta-6 (97.5%). Among these 4 fleets, Gamma-3 has the lowest Total Flight Hours (310 hours) and also the lowest Operating Cost per Km ($10.50). Therefore, Statement II is TRUE.
Cross-column multi-condition filtering verifies both the minimum flight hours and minimum operating cost within the subset.
3
Evaluate Statement III by calculating the mean Total Flight Hours for fleets with Payload Capacity <180 kg< 180\text{ kg}.
Fleets with Payload Capacity strictly less than 180 kg are Gamma-3 (120 kg), Zeta-6 (140 kg), and Alpha-1 (150 kg). (Epsilon-5 is excluded as its payload is exactly 180 kg). Their flight hours are 310, 390, and 420. Mean = 310+390+4203=11203373.33 hours\frac{310 + 390 + 420}{3} = \frac{1120}{3} \approx 373.33\text{ hours}. Since 373.33<400373.33 < 400, Statement III is FALSE.
Computing the arithmetic mean of the correctly filtered subset shows it is below the threshold of 400 hours.

Anahtar Kavram

Multi-Statement Boolean Evaluation on structured tables involving subset filtering, median calculation, and conditional verification.
Tahmini Süre:2m 0s
Soru 2154Soru

Consider the following argument:

Although recent federal initiatives allocate substantial subsidies for constructing domestic semiconductor manufacturing facilities, establishing local foundries will not eliminate supply chain vulnerabilities because critical refined inputs such as ultra-pure neon and silicon remain concentrated in overseas processing hubs. Therefore, onshore fabrication capacity by itself cannot guarantee supply chain resilience. Consequently, trade officials must prioritize multilateral raw-material access agreements rather than depending exclusively on domestic manufacturing subsidies.

True or False: The statement 'onshore fabrication capacity by itself cannot guarantee supply chain resilience' functions as the author's ultimate main conclusion in the argument.

Cevabı ve açıklamayı göster

Cevap: False

Cevap

False. The statement functions as an intermediate conclusion that supports the ultimate main conclusion regarding multilateral raw-material access agreements.
The evaluated statement is an intermediate conclusion used by the author to justify the primary recommendation that trade officials prioritize multilateral raw-material access agreements.

Adım Adım Çözüm

1
Identify the logical flow and structural role of each claim in the passage.
The fact about overseas raw-material concentration acts as a supporting premise. From this premise, the author derives that onshore fabrication alone cannot guarantee resilience. Finally, this point is used to justify why trade officials must prioritize multilateral raw-material agreements.
Tracing support relationships reveals which statements serve as evidence and which serve as conclusions.
2
Determine whether the target statement is the ultimate conclusion or an intermediate step.
Because the target statement ('onshore fabrication capacity by itself cannot guarantee supply chain resilience') supports the final recommendation introduced by 'Consequently', it functions as a stepping stone rather than the final destination of the argument.
A claim that receives support from premises but gives support to a primary recommendation is an intermediate conclusion.

Anahtar Kavram

Distinguishing Main Conclusions from Intermediate Conclusions
Soru 2155Soru

Consider the following argument:

Over the past decade, venture capital firms have increasingly encouraged tech founders to adopt dual-class stock structures, arguing that multi-vote shares shield executives from short-term market pressures and foster long-term innovation. However, empirical studies examining post-IPO performance show that corporate governance oversight declines significantly when founders hold concentrated voting control, leading to higher rates of capital misallocation. Thus, despite their popular defense as catalysts for visionary development, dual-class stock structures ultimately undermine long-term shareholder value in public tech enterprises.

True or False: The claim that dual-class stock structures ultimately undermine long-term shareholder value in public tech enterprises functions as the ultimate main conclusion of the argument.

Cevabı ve açıklamayı göster

Cevap: True

Cevap

True. The statement accurately identifies the ultimate main conclusion of the argument.
The statement is True because the indicated sentence expresses the author's core thesis. It follows the pivot word 'However' and conclusion indicator 'Thus', using empirical findings about governance and capital misallocation as supporting evidence.

Adım Adım Çözüm

1
Analyze the structural role of the first sentence.
Identified the opening sentence as background context describing a popular view supported by venture capital firms.
Understanding background context prevents misinterpreting opposing viewpoints as the author's own stance.
2
Identify structural pivots and premises.
The pivot word 'However' introduces factual premise evidence regarding corporate governance decline and capital misallocation.
Premises provide the empirical backing used to support the author's final position.
3
Locate the conclusion indicator and evaluate the final sentence.
The indicator word 'Thus' introduces the author's final synthesis: dual-class stock structures ultimately undermine shareholder value.
The final sentence draws together the evidence to refute the initial background claim, making it the ultimate main conclusion.

Anahtar Kavram

Identifying Main Conclusions
Soru 2156Soru

Recent state legislation provides substantial tax credits to encourage commercial agricultural enterprises to transition from traditional flood irrigation to advanced subsurface drip systems. Critics argue that these subsidies inappropriately benefit large agribusiness corporations that possess sufficient capital to fund technological upgrades independently. However, subsurface drip systems reduce regional agricultural water consumption by more than 40 percent, thereby safeguarding vital groundwater aquifers during prolonged drought cycles. Because long-term aquifer stability is essential to the region's broader economic viability, state policymakers ought to preserve these irrigation tax incentives despite fiscal objections.

Which of the following best expresses the main conclusion of the argument above?

Cevabı ve açıklamayı göster

Cevap: State lawmakers should maintain tax credits for agricultural drip irrigation transitions regardless of criticisms regarding corporate subsidies.

Cevap

State lawmakers should maintain tax credits for agricultural drip irrigation transitions regardless of criticisms regarding corporate subsidies.
The argument builds toward the recommendation that state policymakers ought to preserve the irrigation tax incentives despite fiscal objections. The reduction in water consumption and long-term aquifer stability serve as supporting evidence for this central assertion.

Adım Adım Çözüm

1
Analyze the structural role of each statement in the passage.
Identify background context (tax credits), counter-argument (critics' view on corporate benefits), premises (40% water reduction, aquifer stability), and the author's main assertion.
Deconstructing the argument structure distinguishes core premises from the final claim.
2
Locate indicator words and structural pivots.
The pivot word 'However' refutes the critics' objection, and the statement 'state policymakers ought to preserve these irrigation tax incentives...' functions as the ultimate claim.
Indicator words like 'ought to' signal the author's primary recommendation, while preceding claims provide supporting evidence.
3
Evaluate answer choices to match the ultimate main conclusion.
Select the choice that accurately captures the assertion that state policymakers should maintain the tax credits despite fiscal objections.
The correct choice must capture the author's final claim without confusing it with intermediate evidence or opposing views.

Anahtar Kavram

Identifying Main Conclusion in Arguments with Opposing Views
Tahmini Süre:1m 30s
Soru 2157Soru

A regional hospital system plans to transition its patient health records from localized physical servers to a centralized cloud-based network. Hospital administrators argue that this migration will significantly reduce overall diagnostic turnaround times in the emergency room, noting that the cloud system allows physicians to retrieve patient medical histories instantaneously from any workstation rather than waiting several minutes for local server queries. Which of the following is an assumption on which the hospital administrators' argument depends?

Cevabı ve açıklamayı göster

Cevap: Delays caused by local server queries currently account for a meaningful portion of the overall diagnostic turnaround time in the emergency room.

Cevap

The argument depends on the assumption that delays caused by local server queries currently account for a meaningful portion of the overall diagnostic turnaround time in the emergency room.
The conclusion asserts that cloud retrieval will significantly reduce overall diagnostic turnaround times because retrieving histories will take seconds rather than several minutes. For this conclusion to hold, the time saved during file retrieval must represent a meaningful component of the total diagnostic timeframe. Applying the Negation Test shows that if server delays are trivial in the context of the total diagnostic duration, the migration will fail to deliver a significant reduction in overall turnaround time.

Adım Adım Çözüm

1
Identify the main premise and conclusion of the argument.
Premise: Cloud servers allow instantaneous retrieval of medical histories instead of waiting several minutes for local server queries. Conclusion: Moving to cloud servers will significantly reduce overall diagnostic turnaround times.
Deconstructing the argument isolates the logical bridge between instantaneous record retrieval and overall diagnostic turnaround time.
2
Identify the logical gap between premise and conclusion.
The author assumes that saving several minutes during file retrieval will result in a significant overall reduction in total diagnostic turnaround time.
If file retrieval time is negligible compared to the total time needed for diagnostics, saving those minutes will not significantly affect the total time.
3
Apply the Negation Test to the correct choice.
Negated statement: Delays from local server queries do NOT account for a meaningful portion of overall diagnostic turnaround time. Outcome: If server query delays are negligible, eliminating them cannot significantly reduce overall turnaround times. The conclusion shatters.
A valid unstated assumption must be necessary to the conclusion; its logical negation must collapse the argument.

Anahtar Kavram

Identifying Unstated Assumptions (Negation Test)
Soru 2158Soru

The statements below represent the core structural components of an economic report on municipal clean energy projects. Arrange the statements in logical order of argument flow, beginning with the foundational background premise, progressing through the supporting evidence and intermediate conclusion, and ending with the ultimate main conclusion.

Öğeleri doğru sıraya koymak için sürükleyin

Cevabı ve açıklamayı göster

Cevap

The correct logical sequence starts with the statement outlining the upfront cost barrier, followed by the premise showing long-term cost recovery, then the intermediate conclusion identifying green bonds as the optimal funding solution, and concludes with the author's main recommendation to immediately issue those bonds.
The argument follows a classical problem-solution structure. First, it establishes the problem (upfront costs exceeding municipal reserves). Second, it presents supporting evidence showing long-term financial payback. Third, it derives an intermediate sub-conclusion that green infrastructure bonds offer a non-depleting funding vehicle. Finally, it uses this sub-conclusion to support the ultimate main conclusion: a call to action recommending that mid-sized industrial cities immediately issue these bonds.

Adım Adım Çözüm

1
Identify the foundational background context.
The statement highlighting that initial retrofitting costs exceed city reserves by thirty percent sets up the primary problem.
An argument logically begins by establishing the context or problem that requires analysis or action.
2
Locate the supporting premise and evidence.
The statement demonstrating that energy savings and carbon credits will recoup expenses within six years acts as evidence of economic viability.
Evidence provides the rational basis for considering solutions to the initial problem.
3
Determine the intermediate conclusion.
The statement establishing that green infrastructure bonds provide low-interest funding without depleting reserves bridges the gap between the financial problem and the economic viability.
This claim is supported by the preceding premises and serves as a stepping stone toward the overall recommendation.
4
Identify the ultimate main conclusion.
The statement urging mid-sized industrial cities to immediately issue green infrastructure bonds for geothermal conversion is the overarching claim.
This prescriptive recommendation relies on all prior premises and the intermediate conclusion, making it the final point of the argument.

Anahtar Kavram

Tracing structural hierarchy from premises and intermediate conclusions to the ultimate main conclusion.
Tahmini Süre:1m 30s
Soru 2159Soru

Consider the following argument: To preserve its historical archives, a municipal library plans to store its entire collection of 19th-century paper maps in sealed, low-humidity desiccant vaults. The chief archivist claims that because high ambient humidity significantly accelerates cellulose hydrolysis in paper, maintaining ultra-low moisture levels in these vaults will completely prevent further degradation of the map collection.

True or False: The archivist's argument depends on the assumption that environmental factors other than humidity, such as light exposure or airborne acids, are not independently causing ongoing paper degradation in the collection.

Cevabı ve açıklamayı göster

Cevap: True

Cevap

True. The statement represents a necessary unstated assumption for the argument.
The statement is true because the archivist asserts that low humidity will 'completely prevent further degradation.' If other unaddressed factors like light exposure or airborne pollutants independently cause paper degradation, humidity control alone cannot achieve complete prevention. Applying the Negation Test shows that if other factors do independently cause degradation, the conclusion fails.

Adım Adım Çözüm

1
Identify the conclusion and premise of the argument.
Premise: High ambient humidity accelerates cellulose hydrolysis in paper. Conclusion: Low-humidity desiccant vaults will completely prevent further paper degradation of the map collection.
Analyzing the exact scope of the conclusion ('completely prevent further degradation') is necessary to determine what conditions must hold true.
2
Apply the Negation Test to the statement.
Negated statement: Factors other than humidity (such as light exposure or airborne acids) ARE independently causing ongoing paper degradation in the collection.
If the negated statement is true, maintaining low humidity will not completely prevent degradation because other environmental factors will continue to degrade the paper.
3
Evaluate the impact of negation on the author's conclusion.
The negated statement demonstrates that humidity control alone is insufficient to guarantee complete prevention of paper degradation, directly invalidating the archivist's conclusion.
Because logical negation of the statement invalidates the argument's conclusion, the original statement is a required unstated assumption.

Anahtar Kavram

Negation Test for Unstated Assumptions
Soru 2160Soru

Although several urban policy analysts advocate for municipal subsidies to accelerate the installation of reflective cool roofs on private residential buildings, pointing out that such roofs lower indoor cooling demands during summer months, this policy is fundamentally flawed. Cool roofs primarily reflect shortwave solar radiation during peak daylight hours, but they do little to diminish the longwave thermal radiation emitted by dense concrete infrastructure at night, which is the primary driver of dangerous nocturnal urban heat islands. Consequently, city governments seeking to reduce heat-related public health risks should allocate infrastructure funding toward expanding urban tree canopies rather than subsidizing private cool-roof installations.

Which of the following best expresses the main conclusion of the argument above?

Cevabı ve açıklamayı göster

Cevap: City governments aiming to mitigate heat-related public health risks should prioritize funding urban tree canopy expansion over subsidizing private cool-roof installations.

Cevap

City governments aiming to mitigate heat-related public health risks should prioritize funding urban tree canopy expansion over subsidizing private cool-roof installations.
The correct answer accurately expresses the author's final recommendation, introduced by the conclusion marker 'Consequently'. The passage builds an argument demonstrating the limitations of reflective cool roofs regarding nighttime urban heat islands, culminating in the assertion that municipal resources should be redirected toward expanding urban tree canopies.

Adım Adım Çözüm

1
Analyze the logical flow and locate structural transitions
The passage begins by presenting a counter-advocacy position ('Although several urban policy analysts advocate...'), refutes it, and introduces a final claim using the transition word 'Consequently'.
Conclusion indicators such as 'consequently' typically introduce the main recommendation of the author.
2
Differentiate premises and intermediate steps from the ultimate claim
The explanation of shortwave versus longwave radiation serves as evidence showing the limitation of cool roofs, which justifies the author's policy recommendation.
Evidence and intermediate reasons exist to support the main conclusion rather than stand as the final point.
3
Identify the option that captures the author's primary recommendation
The main conclusion is that city governments ought to allocate funds to tree canopies instead of cool roofs.
This captures the ultimate outcome toward which all evidence in the passage is directed.

Anahtar Kavram

Identifying Main Conclusions in Critical Reasoning Arguments
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