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During an applied leakage test, the maximum leakage rate for a triple combination vehicle is ____ in a minute.
A.  2 psi
B.  4 psi
C.  6 psi
It is important to know the maximum air loss rate that is safe for your specific vehicle. A triple combination should have a leakage rate no higher than 6 psi in a minute during an applied leakage test.

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