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问题 单项选择题

可以免责的情形是( )。

A．因不可抗力不能履行合同的

B．造成对方人身伤害的

C．当事人延迟履行后发生不可抗力的

D．因故意造成对方财产损失的

答案

参考答案：A

选择题

Wang Ping is one of the best students who _____ from Beijing University. She studied politics, which _____ the

study of the ways in which a country is governed. [ ]

A. has graduated; are

B. have graduated; are

C. have graduated; is

D. has graduated; is.

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填空题

一个质量为0.3kg的物体沿水平面做直线运动的v-t图象如图所示，图线a表示物体受水平拉力时的情况，图线b表示撤去水平拉力后物体继续运动的情况，已知重力加速度g=10m/s2，则物体与水平面间的动摩擦因数为______，水平拉力对物体做的功为______J．
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