对于确定扭矩符号的右手螺旋法则,叙述正确的是( )。 -题库考试答案搜索网

对于确定扭矩符号的右手螺旋法则,叙述正确的是( )。

单选题

2021-09-01 23:49

A、按右手螺旋法则把表示成矢量,当矢量方向与截面外法线方向相反时, 为正;
B、按右手螺旋法则把表示成矢量,当矢量方向与截面外法线方向相反时, 为负;
C、按右手螺旋法则把表示成矢量,当矢量方向与截面外法线方向相同时, 为正;
D、以上说法都不对。

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正确答案

C

试题解析

标签：青书学堂西南石油大学工程力学(高起专)

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