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> 试题题型：单选题难度等级：对于参考系，下列说法正确的是 [ ] A．研究物体的运动，必对于参考系，下列说法正确的是 [ ] A．研究物体的运动，必须选定参考系 B．运动是绝对的，研究物体的运动可以不必选取参考系 C．参考系必须选择地面 D．选择任意物体作参考系来研究物体的运动时，其运动情况是一样的

问题：

发布时间：2020-03-26

试题题型：单选题难度等级：

对于参考系，下列说法正确的是 [ ] A．研究物体的运动，必

对于参考系，下列说法正确的是

[ ]

A．研究物体的运动，必须选定参考系
B．运动是绝对的，研究物体的运动可以不必选取参考系
C．参考系必须选择地面
D．选择任意物体作参考系来研究物体的运动时，其运动情况是一样的

参考答案：

提问用户：m9***KcL

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