Tüm alıştırma soruları

A surveyor is mapping a plot of land and launches a drone from a perfectly flat field. The drone ascends vertically to an altitude of $30$ meters. It then travels horizontally in a straight line for $16$ meters to photograph a landmark. What is the direct line-of-sight distance, in meters, from the launch point on the ground to the drone?

Passage:
Nuclear submarines rely on regenerative carbon dioxide ($CO_2$) scrubbers to maintain breathable atmospheric conditions during prolonged submerged operations. Ambient air is drawn continuously through beds of solid amine resin, which chemically bind $CO_2$ molecules at room temperature. Once a resin bed becomes saturated, the system automatically redirects incoming airflow to an alternate bed and exposes the saturated resin to steam heat and a vacuum, venting the desorbed $CO_2$ gas directly into the surrounding seawater. This cyclical thermal desorption allows the amine resin to be reused indefinitely without consuming consumable chemical cartridges. In contrast, older non-regenerative systems required manual replacement of disposable lithium hydroxide ($LiOH$) canisters, which generated hazardous solid waste and occupied valuable storage space.

Statement: According to the passage, modern regenerative carbon dioxide scrubbers require consumable chemical cartridges that must be manually replaced when saturated.

Read the passage below and determine the meaning of the target word based on context. What word best completes the summary sentence?

During scheduled quarterly servicing of tactical quiet generator (TQG) sets, maintenance personnel must inspect the mechanical governor actuator linkage. Before adjusting the linkage turnbuckle, technicians must loosen the jam nuts on both rod ends and verify that the throttle lever rests fully against the low-idle stop screw. The linkage rod must be set to provide exactly 0.125 inches of free travel before engaging the governor spring arm. Applying excessive torque to the aluminum bellcrank during adjustment can distort the internal pivot bushing, leading to erratic engine surging.

According to the passage, what condition must technicians verify before adjusting the linkage turnbuckle?

To contain the advancing wildfire, hotshot crews deployed controlled backburns along the ridge to check the flames before they reached residential property. By consuming dry timber ahead of the perimeter, this tactical burn successfully arrested the blaze's forward momentum.

As used in the passage, what does the word "check" most nearly mean?

To prevent uncontrolled wildfires, a forestry management crew conducts prescribed burns only under strict environmental thresholds. Protocol mandates that if ambient relative humidity drops below 25% or sustained wind speeds exceed 15 miles per hour, all active ignition must immediately cease and ground personnel must transition to wetting down the containment perimeter. During a scheduled maintenance burn on Tuesday afternoon, field sensors record humidity falling steadily from 31% to 21%, while wind speeds remain steady at 7 miles per hour.

Based on this information, what action will the forestry crew most likely take next?

Read the following passage about naval degaussing systems:

Naval degaussing systems counteract a ship's magnetic signature to prevent the detonation of magnetic influence sea mines. As a steel-hulled vessel moves through the Earth's magnetic field, its hull acquires permanent and induced magnetization. Degaussing installations consist of heavy electrical cables wrapped around interior compartments through which controlled direct current (DC) is passed. This current produces an opposing magnetic field that neutralizes the ship's overall magnetic field. Shipboard sensors continuously monitor local magnetic field variations and ship heading to automatically adjust coil currents. However, degaussing does not eliminate acoustic or thermal signatures, and it requires dedicated electrical power from shipboard generators rather than relying on natural hull dissipation.

Which factual assessment from the passage corresponds to each statement regarding the naval degaussing system?

Read the passage below about spacecraft orientation systems. Based on the passage, fill in the blank with the term that logically completes the concluding deduction.

Read the following passage and use the contrast clue to complete the statement: Which word best completes the blank?

A military supply depot receives an initial stock of fuel. Over the first month, the stock is increased by $25\%$. During the second month, the new stock is decreased by $x\%$. If the final amount of fuel at the end of the second month is exactly $10\%$ less than the initial stock, what is the value of $x$?

Review the following excerpts from a field evaluation report on military logistics gear. Match each excerpt to the primary tone conveyed by the author.

During routine inspections of suspension bridges, civil engineers pay close attention to minor cable corrosion that could compromise the integrity of the entire structure. Even negligible rust weakens the tensile strength of individual steel strands over time, gradually undermining the bridge's capacity to withstand high crosswinds and heavy traffic loads. Although slight surface oxidation may appear harmless, letting it progress unchecked will endanger the safety of the roadway.

As used in the passage, what does the word "compromise" most nearly mean?

Industrial fiber laser cutting systems focus high-power light through specialized fused-silica lenses. Over continuous operating hours, trace surface debris absorbs small fractions of the laser energy, heating the optic. This localized heating alters the refractive index and curvature of the lens—a phenomenon called thermal lensing—which shifts the focal point upward toward the laser nozzle. When the focal point shifts away from the material surface, cutting efficiency drops and dross adheres to the metal.

Based on the passage, which conclusion about thermal lensing is most logically supported?

Read the following technical passage:

High-altitude transport aircraft utilize catalytic ozone converters to decompose atmospheric ozone entering the environmental control system before it reaches the passenger cabin. The converter core is composed of a ceramic honeycomb matrix wash-coated with a noble metal catalyst, primarily palladium and platinum. At normal cruise altitudes, ambient bleed air passes through the matrix at temperatures exceeding 150 degrees Celsius. The catalytic reaction breaks down toxic ozone into diatomic oxygen without consuming the precious metal coating. If the core becomes contaminated with silicone vapors, the catalyst surface undergoes irreversible poisoning, requiring immediate solvent degreasing and ultrasonic bath cleaning to restore baseline efficiency.

Complete the statement below based directly on the explicit facts provided in the passage:

Read the following passage from a geological survey report:

'During the survey of the northern plateau, technicians observed intermittent seismic tremors that disrupted sensitive recording equipment. To protect the sensors, the field crew excavated a subterranean testing station sixty feet below the bedrock. By routing power cables through existing fissures, engineers managed to circumvent the solid granite ridge without destructive blasting.'

Match each bolded term from the passage with its correct contextual definition based on its morphological components (roots and affixes).

A supplier sells aircraft parts. A specific component is marked up by $60\%$ from its original manufacturing cost to establish a catalog price. Later, the supplier applies a $25\%$ discount to the catalog price for a bulk order. If the discounted bulk price of the component is $\$300$, what was its original manufacturing cost?

Arrange the following calculation steps in the exact chronological sequence they must be performed relative to each other when evaluating the mathematical expression below using the standard order of operations:

Which of the following is equivalent to the expression $8 - 2(3x - 4) + 5x$?

Passage:

A deep-underground geological research facility relies on dual redundant scrubbers to maintain atmospheric carbon dioxide levels below 0.5 percent. During standard operations, when primary sensor telemetry indicates scrubber efficiency has fallen below 70 percent while subterranean occupancy remains at maximum capacity, automated ventilation valves are programmed to divert airflow through the secondary catalytic unit within thirty minutes. During a shift change, the central control room logs that primary scrubber efficiency has degraded to 62 percent and all thirty research personnel remain in the lower research habitat. However, secondary unit intake diagnostics detect a mechanical latch jam preventing the divert valve from opening automatically.

Statement: Based on the passage, the facility's automated ventilation system will reroute habitat airflow through the secondary unit within thirty minutes without requiring manual intervention.

Reverse Osmosis Water Purification Units (ROWPU) provide potable water in field operations by filtering fresh, brackish, or saline water sources. Incoming raw water first undergoes chemical pretreatment with coagulants and passes through multimedia sand filters to eliminate suspended solids and turbidity. Next, cartridge filters capture finer particulate matter before high-pressure pumps force the water through semipermeable polyamide membranes that block dissolved salts, heavy metals, and biological pathogens. Treated water is subsequently chlorinated to maintain residual disinfection during storage. However, ROWPUs cannot treat water contaminated with petroleum products, as hydrocarbons rapidly degrade the reverse osmosis membranes.

According to the passage, which of the following statements about the ROWPU is NOT true?