选择题:平面任意力系,只要主矢R≠0,最后必可简化为一合力。() 题目分类:西安交通大学--理论力学学习指南 题目类型:选择题 查看权限:VIP 题目内容: 平面任意力系,只要主矢R≠0,最后必可简化为一合力。() 参考答案:
Jim holds the opinion that men may have some quali Jim holds the opinion that men may have some qualities that are typical of women 分类:西安交通大学--理论力学学习指南 题型:选择题 查看答案