绝缘操作杆、验电器和测量杆使用时，作业人员的手不得越过护环或手持部分的界限(   )。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69530' and id < 4505107 and id<>'4505107' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69530' and id > 4505107 and id<>'4505107' order by id asc limit 5