作业前检查多电源和有自备电源的用户已采取（   ）等防反送电的强制性技术措施。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69529' and id < 4504994 and id<>'4504994' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69529' and id > 4504994 and id<>'4504994' order by id asc limit 5