问题 选择题
一质点做匀速圆周运动,其线速度大小为4m/s,转动周期为2s,则下列判断错误的是(  )

A.角速度为0.5 rad/s

B.转速为0.5 r/s

C.轨迹半径为 m

D.加速度大小为4π m/s2

答案

答案:A

解答题
选择题
[ ]

A. would like; feel like

B. feel like; feel like

C. feel like; would like

D. would like; would like

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