发生不对称短路时，不仅相电压中可能出现零序电压分量，线电压中也可能出现零序电压分量。(    )  

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69463' and id < 4498542 and id<>'4498542' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69463' and id > 4498542 and id<>'4498542' order by id asc limit 5