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Dual electro-hydraulic steering units usually oper...

海船船员考试

单选题

Dual electro-hydraulic steering units usually operate （）.

发布日期：2021-03-22

A.with both pumps on line at the same time

B.with one pump on standby

C.with the follow-up gear disconnected

D.only when the rudder is moved amidships

标签： dual electro-hydraulic steering units operate

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