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2024 HI CDL Practice Test: Class A - Test 8

12. The tractor protection valve should go from "normal" to "emergency" position when the air pressure falls into what range?
A
75-85 psi.
B
20-45 psi.
C
100-125 psi.
D
50-60 psi.
E
65-90 psi.
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Class A - Test 8
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