Leakage of hydraulic fluid from around the shaft of a hydraulic motor may be caused by（）<br>A:permanent loss of pump suction<br>B:worn shaft seals<br>C:high level in the oil sump<br>D:low motor RPM

Leakage of hydraulic fluid from around the shaft of a hydraulic motor may be caused by（）
A:permanent loss of pump suction
B:worn shaft seals
C:high level in the oil sump
D:low motor RPM

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