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Question

Difficulty: MediumIdentifying Implied Meanings

Passage:
During drydock maintenance of deep-sea research submersibles, technicians inspect the exterior hull for degraded acoustic damping tiles. While these specialized rubber tiles effectively muffle internal mechanical vibrations in shallow operations, extreme hydrostatic pressure at greater depths compresses the microscopic air pockets embedded throughout the material. Once these internal voids collapse, the compressed rubber allows vibrational frequencies to transmit directly into the surrounding water, while also permitting moisture to seep beneath the adhesive backing.

Based on the passage, it can be inferred that the sound-muffling capability of the tiles depends on:

  1. A
    preventing moisture from seeping beneath the adhesive backing
  2. the presence of intact, uncompressed air pockets within the rubber materialAnswer
  3. C
    conducting hull inspections exclusively during drydock maintenance routines
  4. D
    replacing rubber tiles with solid metallic shielding during deep dives

Answer

The sound-muffling capability of the tiles depends on the presence of intact, uncompressed air pockets within the rubber material.
The author explains that acoustic tiles work well until high pressure collapses the microscopic air pockets embedded within the rubber, which subsequently allows vibrations to pass into the water. This directly implies that the presence of intact, uncompressed air pockets is the critical factor enabling the tiles to muffle sound.

Step-by-Step Solution

1
Identify the cause-and-effect relationship described in the text regarding tile performance.
The text states that sound is effectively muffled in shallow water, but when high pressure compresses and collapses the microscopic air pockets, vibrational frequencies transmit into the water.
Understanding the condition that leads to functional failure reveals what is required for normal operation.
2
Deduce the unstated requirement for effective sound dampening.
If the loss of microscopic air pockets causes sound transmission, then the sound-dampening property depends directly on those air pockets remaining intact and uncompressed.
An implied meaning is the necessary logical condition underlying the explicitly stated relationship.
3
Match the deduction to the correct option while eliminating distractor traps.
The option specifying intact air pockets accurately reflects the implied mechanism, while choices citing secondary effects or maintenance details are eliminated.
Ensures the selected option addresses the functional dependency rather than unrelated details.

Key Concept

Inferring functional dependencies and unstated mechanisms from cause-and-effect descriptions
Estimated Time:1m 0s
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Topics

Identifying Implied Meanings

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