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全部科目 > 水路交通运输技能考试 > 海船船员考试 > 船舶管理(轮机专业) > 轮机英语 > 船舶电气与船舶安全

单项选择题

Moisture in a D-Cmotor would cause （）.

A.short circuit
B.speed up
C.slow down
D.hunting

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单项选择题

Prior to any overhaul work on electric equipment, it is important to ensure the circuits are （）.

A.live
B.dead
C.excited
D.on line

单项选择题

（） control system is one in which the control action is independent of the output.

A.Feed back
B.Negative feed back
C.Close loop
D.Open loop

单项选择题

（） power is the power developed within the cylinder and can be measured by an engine indicator.

A.The shaft
B.The mechanical
C.The electric
D.The indicated

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