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The threshold is 90 dB. Using protection at 95 dB complies with the rule. Option A is correct. MASS comprehension focuses on proper use of PPE thresholds.

The requirement applies to all moving belts and pulleys. Option B is correct. MASS comprehension emphasizes interpreting broad safety rules. This reflects real OSHA compliance requirements.

Option D has a mirrored orientation that cannot be achieved by rotation, only by flipping. MASS spatial ability tasks often distinguish between rotation and reflection. Candidates must mentally manipulate figures while remembering rules. This mirrors real assembly, where a part may look correct but not fit unless mirrored. Quick recognition of symmetry prevents errors in maintenance tasks.

Ohm’s law: I = V ÷ R = 120 ÷ 24 = 5 A. Correct answer is C (5 A). MASS math items test accurate formula application, vital for diagnosing circuits.

Gear ratio = 24:12 = 2:1. Driven = 40 × 2 = 80 RPM. Option C is correct. MASS gear problems emphasize torque-speed trade-offs.