【单选题】【消耗次数:1】
力偶可以在它的作用平面内( ),而不改变它对物体的作用。
任意移动
任意转动
任意移动和转动
既不能移动也不能转动
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相关题目
【单选题】 力偶可以在它的作用平面内( ),而不改变它对物体的作用
①  任意移动
②  任意转动
③  任意移动和转动
④  既不能移动也不能转动
【单选题】 保持力偶矩的大小、转向不变,力偶在作用平面内任意转移,则刚体的转动效应( )。
①  变大
②  变小
③  不变
④  变化,但不能确定变大还是变小
【单选题】 保持力偶矩的大小、转向不变,力偶在作用平面内任意转移,则刚体的转动效应()。
①  变化,但不能确定变大还是变小
②  变大
③  不变
④  变小
【单选题】 构件与支撑物固定在一起,构件在固定端既不能沿任何方向移动,也不能转动,这种支座称为( )。
①  二力杆
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③  可动铰支座
④  固定铰支座
【判断题】 只要保持力偶矩大小和转向不变,可以任意改变力偶中力的大小和相应力偶臂的长短,而不改变它对刚体的作用效应。
①  正确
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【单选题】 任何一个物体,如果对其不加限制,那么,它在空间的位置是不确定的,可以向任意方向移动或转动,该说法( )
①  正确
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【单选题】 若要将作用力沿其作用线移动到其它点而不改变它的作用,则其移动范围
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②  可以在不同刚体上;
③  可以在同一刚体系统上;
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【单选题】 只限物体任何方向移动,不限制物体转动的支座称()支座。
①  可动铰
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【单选题】 只限物体任何方向移动,不限制物体转动的支座称( )支座。
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