关于力偶性质的下列说法中,表达有错误的是( )。 -题库考试答案搜索网

关于力偶性质的下列说法中,表达有错误的是( )。

单选题

2021-07-17 23:18

A、力偶无合力
B、力偶对其作用面上任意点之矩均相等,与矩心位置无关
C、若力偶矩的大小和转动方向不变 ,可同时改变力的大小和力偶臂的长度,作用效果不变
D、改变力偶在其作用面内的位置,将改变它对物体的作用效果。

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正确答案

B

试题解析

标签：建筑工程技术高起专工程力学期末考试机械制造与自动化水利水电建筑工程 2020级第一学期期末考试期末环境工程专升本道路桥梁工程技术

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