Q
359. Retarders are used to:
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Aa. Help slow the vehicle while driving and reduce brake wear.
Bb. Keep you from skidding where the road is slippery.
Cc. Both A and B.
Detailed Explanation
The correct answer is "c. Both A and B.". This is based on federal CDL regulations and safety standards.
Correct Answer: c. Both A and B.
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