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物体受平面内三个互不平行的力作用而平衡,则三个力的作用线( )。
单选题
2018-08-03 13:57:17
0
301
A. 必交于一点
B. 必交于二点
C. 交于一点、二点、三点都可能
D. 必交于三点
参考答案:……
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参考答案
科目:
工程力学
学科:
应用统计*
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