在起重机械安全装置中，凡是动力驱动的起重机，其运行极限位置都应设( )。 A．上升 发布时间：2018-02-02 21:05 │ 来源：www.tikuol.com 题型：单项选择题 问题： 在起重机械安全装置中，凡是动力驱动的起重机，其运行极限位置都应设( )。A．上升极限位置限制器 B．偏斜调整和显示装置C．缓冲器 D．运行极限位置限制器
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