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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 > 船舶动力装置

单项选择题

Which of the following devices is a common basic element with nearly all mechanical governors?（）

A.Power piston
B.Control rack
C.Weights acted on by centrifugal force
D.Isochronous droop spring

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