髙处作业施工中，施工人员手持电动工具操作，工具应（）以防意外坠落。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25784' and id < 2166080 and id<>'2166080' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25784' and id > 2166080 and id<>'2166080' order by id asc limit 5