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CDL Practice Test
General Knowledge
Air Brakes
Combination Vehicles
Doubles and Triples
Tanker Vehicles
Hazardous Materials
Transporting Passengers
CDL Doubles and Triples Practice Test
Question 1 of 3
The locking lever safety catch for the fifth wheel must be __________ for a coupling to be complete.
A
Removed from the locking lever
B
Threaded through the locking lever
C
Over the locking lever
D
Behind the locking lever
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