What is the first step in coupling a tractor-semitrailer?
a) Check the trailer's height
b) Inspect the fifth wheel
c) Secure the tractor
d) Connect all air lines to the trailer
Answer: b) Inspect the fifth wheel
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a) Check the trailer's height
b) Inspect the fifth wheel
c) Secure the tractor
d) Connect all air lines to the trailer
Answer: b) Inspect the fifth wheel
If the answers is incorrect or not given, you can answer the above question in the comment box. If the answers is incorrect or not given, you can answer the above question in the comment box.