Which of the following devices is a common basic e
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(同步的)droop spring
请帮忙给出正确答案和分析,谢谢!
参考解答
正确答案:C
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