It is important with all hydraulic systems to ensure that interlocking arrangements provided for pump or motor control levers are （） before the pump driving motor can be started.<br>A:in the pert position<br>B:in the starboard position<br>C:in the neutral position<br>D:to be dismantled

It is important with all hydraulic systems to ensure that interlocking arrangements provided for pump or motor control levers are （） before the pump driving motor can be started.
A:in the pert position
B:in the starboard position
C:in the neutral position
D:to be dismantled

出自：海船船员证

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