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EXAM REVIEW
NCCCO Examination
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Ihuman Case Study
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Free Arizona DMV Air Brakes Class A Test 2
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Question Number 21
21. In a vehicle with dual parking control valves, a separate air tank can be used:
To make the air brakes work more effectively.
To temporarily release the spring brakes.
To charge the brakes on the rear trailer.
✔ Correct Answer:
To temporarily release the spring brakes.
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