关于平面力系与其平衡方程式,下列的表述中不正确的是( ) -题库考试答案搜索网

关于平面力系与其平衡方程式,下列的表述中不正确的是( )

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2022-04-02 12:05

A、任何平面力系都具有三个独立的平衡方程式
B、任何平面力系只能列出三个平衡方程式
C、在平面力系的平衡方程式的基本形式中,两个投影轴必须垂直
D、平面力系如果平衡,则该力系在任意选取的投影轴上投影的代数和必为零

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正确答案

ABC

试题解析

标签：黑龙江工程继续教育学院土木工程专升本工程力学期末试卷

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