本题目来源于试卷: Physics Unit6: Work and Energy，类别为 通用国际物理
[单选题]
Compared to yesterday, you did 3 times pad w1u5s 1mmd/l 8uo0the work in one8p+.l+r k5s3cm0dxrxzo i* zf -third the time. To do so, your power outpud mc.orlrsk+3 f 8xix50*z+zpt must have been
A. the same as yesterday's power output.
B. one-third of yesterday's power output.
C. 3 times yesterday's power output.
D. 9 times yesterday's power output.
参考答案: D
本题详细解析:
暂无
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