A. 大于其各分力对该点的矩的代数和 B. 等于其各分力对该点的矩的代数和 C. 小于其各分力对该点的矩的代数和 D. 有时大于、有时小于其各分力对该点的矩的代数和
A. closest point to approach B. close point to approach C. crossing point to approch D. coming point to approach
A. 正确 B. 错误