通过调整有载调压变压器分接头进行调整电压时，对系统来说(    )。  

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69462' and id < 4498655 and id<>'4498655' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69462' and id > 4498655 and id<>'4498655' order by id asc limit 5