刚体定轴转动时,各质元都在作____运动,角位移、角速度、角加速度都____。(填相同或不同)
查看答案
质量大的物体转动惯量也一定大。
A. 对
B. 错
We had better take a car in order to catch the plane.( )
A. 对
B. 错
Because he was ill, he didn't come.( )
A. 对
B. 错
I’ll go with you to the cinema this afternoon if I’m free.( )
A. 对
B. 错