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Zorluk: ZorExplicit Main Idea

Passage:
Impressed Current Cathodic Protection (ICCP) systems prevent seawater corrosion on naval ship hulls by continuously discharging a controlled direct electrical current that neutralizes electrochemical degradation. While sacrificial zinc anodes dissolve passively over time and require frequent drydock replacement, ICCP systems utilize inert mixed-metal oxide anodes energized by onboard power units. Computerized controllers monitor underwater reference electrodes to adjust voltage outputs dynamically, compensating for changes in water salinity, temperature, and vessel speed. By maintaining the hull at a constant negative electrochemical potential, the ICCP system delivers reliable, long-term corrosion defense across varying operational environments.

Statement: The explicitly stated main idea of the passage is that Impressed Current Cathodic Protection systems protect ship hulls from seawater corrosion by supplying a controlled electrical current that counteracts electrochemical degradation.

Cevap: Cevap

Cevap

True
The evaluation of 'True' is correct because the lead topic sentence explicitly asserts that ICCP systems prevent naval hull corrosion through the continuous discharge of controlled electrical current to neutralize electrochemical breakdown, which is reinforced by the concluding summary.

Adım Adım Çözüm

1
Locate the primary topic sentence that defines the overarching scope of the passage.
Identified the lead sentence: 'Impressed Current Cathodic Protection (ICCP) systems prevent seawater corrosion on naval ship hulls by continuously discharging a controlled direct electrical current that neutralizes electrochemical degradation.'
Explicit main ideas in technical expository passages are directly stated in an anchor sentence, typically at the beginning or conclusion.
2
Analyze whether the remaining sentences provide supporting technical details for this primary claim.
The subsequent sentences describe component comparisons (zinc anodes vs. inert anodes), monitoring mechanisms (reference electrodes), and environmental adjustments (salinity and speed).
Supporting details substantiate and elaborate on the central mechanism without replacing it as the main idea.
3
Compare the provided statement to the identified explicit main idea.
The statement directly reflects the comprehensive core claim explicitly stated in the lead topic sentence.
Since the statement accurately captures the explicitly stated central point rather than an isolated secondary detail, the statement is true.

Anahtar Kavram

Explicit Main Idea Identification
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Konular

Explicit Main Idea

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