Power is defined as the （）.<br>A:rate of doing work<br>B:amount of force needed to overcome friction<br>C:amount of work accomplished<br>D:distance through which an object is moved

Power is defined as the （）.
A:rate of doing work
B:amount of force needed to overcome friction
C:amount of work accomplished
D:distance through which an object is moved

出自：海船船员证

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