You are driving a combination vehicle when the trailer brakes away, pulling apart both air lines. You expect the trailer brakes to come on and:
a. The tractor to lose air pressure.
b. The tractor protection valve to close.
c. The trailer supply valve to stay open.
b. The tractor protection valve to close.
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If a leak is too small for escaping smoke to be visible, the leak may be detected by _____.
a. listening for a hissing sound b. using an ultraviolet light c. spraying a soap solution d. the odor of the smoke
In a multiple-occupancy building, each occupant must have access to the unit's ____.
A. main feeder line B. service meter C. fuse box D. service disconnecting means
When a mobile crane is being moved without direction from the rigger, three travel signals from the crane's
horn mean the _____. a. boom is rising b. crane is stopping c. crane is moving forward d. crane is traveling in reverse
The brake bleeding procedure usually specified for a rear-wheel vehicle with a dual split master cylinder is ________
A) RR, LR, RF, LF B) RF, LR, LF, RR C) LF, RF, LR, RR D) LR, RR, LF, RF