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【多选题】
施工机械的控制操纵系统是用来操纵机械的（）等运动，控制机械的压力、动力、力矩、温度、速度等工作状态的机构系统，包括各种操纵器和显示器。
A.
启动
B.
制动
C.
换向
D.
调速
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【简答题】To a large extent, the job of public relations is to optimize good news and to forestall bad news. But when disaster (1) , t he public relations practitioner's task, in consultation with legal counsel...
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