电力系统中可能不需要设置检修备用。(    )。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69461' and id < 4498381 and id<>'4498381' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69461' and id > 4498381 and id<>'4498381' order by id asc limit 5