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Cheat sheet
Question
While inspecting a coupling, you should go under the trailer and:
Answers
A.  Detach the jaws from around the kingpin.
B.  Make sure the locking lever is in the "emergency" position.
C.  Remove the safety latch.
D.  Look into the back of the fifth wheel.
Explanation
While inspecting a coupling, you should go under the trailer and look into the back of the fifth wheel. Ensure that the fifth wheel jaws are secured around the shank of the kingpin.

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