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单选题
An axial piston, variable stroke pump is used in a vessels hydraulic steering gearUnder pressure, oil continually leaks out from between the valve plate/cylinder barrel and will().
A

cause loss of hydraulic oil from the system

B

result in extreme damage to the pump

C

cause damage to the pump ff not continually drained from the pump casing

D

result in the system high side pressure to substantially drop off


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