Q
43. Your emergency air line breaks or gets pulled apart while you are driving. The loss of pressure will cause the:
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AAir compressor to unload instead of pumping air.
BEmergency trailer brakes to come on.
CTrailer supply valve to open.
Detailed Explanation
The correct answer is "Emergency trailer brakes to come on.". This is based on federal CDL regulations and safety standards.
Correct Answer: Emergency trailer brakes to come on.
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