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2024 RI CDL Practice Test: Class B - Test 2

8. How do air-operated disc brakes work?
A
They use compressed air instead of hydraulic fluid.
B
When the engineer applied these brakes, the pipe filled with air and squeezed the brakes.
C
All of the listed answers.
D
They use an air compressor to feed air through a brake pipe into air tanks on each car.
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