高处作业时，严禁人在梯子上时（）梯子。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25758' and id < 2164471 and id<>'2164471' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25758' and id > 2164471 and id<>'2164471' order by id asc limit 5