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Q

73. To test the air service brakes you should:

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AStop the vehicle, put it in low gear, depress the service brake, and then gently pull against the brakes.

BBrake firmly while slowly moving backwards.

CBrake firmly while slowly moving forward.

Detailed Explanation

The correct answer is "Brake firmly while slowly moving forward.". This is based on federal CDL regulations and safety standards.

Correct Answer: Brake firmly while slowly moving forward.

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