试题与答案

下列现象中物体处于超重状态的是( ) A.汽车过拱桥桥顶时 B.单摆摆球过最低点

题型:多选题

题目:

下列现象中物体处于超重状态的是(  )

A.汽车过拱桥桥顶时

B.单摆摆球过最低点时

C.随电梯减速下降的物体

D.绕椭圆轨道运动的卫星过近地点时

答案:

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