50-degree
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180-degree
|
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90-degree
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Number of questions: | 20 |
Passing score: | 16 |
50-degree
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180-degree
|
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90-degree
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One air line.
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Two air lines.
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Three air lines.
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Four air lines.
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Detach the jaws from around the kingpin.
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Make sure the locking lever is in the "emergency" position.
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Remove the safety latch.
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Look into the back of the fifth wheel.
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Quicker
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Easier
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More difficult
|
Disengaged.
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Locked.
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Deactivated.
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Dry.
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The parking brake.
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The trailer emergency brakes.
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The trailer service brakes.
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The landing gear.
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Lock the brakes.
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Release the brakes.
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Steer in the opposite direction.
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Accelerate.
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