AIR BRAKES PRACTICE TEST - MASSACHUSETTS
11.
Before leaving your vehicle unattended, you should:
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Apply the parking brake.
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Remove the keys.
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Chock the wheels.
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All of the above.
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12.
An alcohol evaporator is important during:
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cold weather.
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dry weather.
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hot weather.
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windy weather.
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13.
Overloading a vehicle with cargo can have negative effects on all of the following except:
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Steering
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Speed control
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Weight limits
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Braking
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14.
If the spring brakes do not release when you push the trailer air supply control, you should:
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check the electrical cables.
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check the air line connections.
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pump the brakes.
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rev or
lug the engine.
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15.
When backing, you should:
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back quickly.
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back and turn toward the right side whenever possible.
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use the mirrors on both sides.
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only use mirror on the driver's side.
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