CDL AIR BRAKES PRACTICE TEST - DISTRICT OF COLUMBIA
21.
You hear a loud "bang" which sounds like a tire blowout. You should:
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inspect your tires with your mirrors.
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check the tires at the next stop.
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assume you
have a tire failure.
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keep driving as normal.
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22.
Antifreeze:
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helps the engine only when the temperature is below freezing.
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doesn't help the engine in any way.
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helps the engine under hot conditions as well as cold conditions.
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helps the engine only under hot conditions.
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23.
Under a pressurized system, the radiator cap:
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should be removed when the coolant is hot.
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should never be removed until the system has cooled.
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should never be hot.
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should always be cool.
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24.
Tar in the road pavement rising to the road surface in very hot weather:
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is very sticky and will slow down your vehicle.
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causes the road to become very slippery.
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does not affect the road surface or driving conditions.
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might get in your engine.
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25.
What should you do to correct a drive-wheel braking skid?
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Fully apply the brakes, turn the steering wheel quickly, push in the clutch, and countersteer.
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Turn in the same direction as the skid.
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Stop braking, turn the steering wheel quickly, push in the clutch, and countersteer.
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None of the above.
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