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Commercial Driver's License

Category - Air Brakes

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The air that is used in air brakes is?

Heated air
Decompressed air
Compressed air
None of the above

Explanation

Answer: C - The air that is used in air brakes on commercial vehicles is compressed air. Compressed air is used because it affords a reliable and safe way in which to slow and stop heavy vehicles as long as the braking system is maintained properly.

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Commercial Driver's License

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