起重搬运时只能由一人统一指挥，禁止设置中间指挥人员传递信号(   )。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69530' and id < 4505110 and id<>'4505110' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69530' and id > 4505110 and id<>'4505110' order by id asc limit 5