.未装设无功补偿装置的变电所母线为PQ节点。(    )  

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69495' and id < 4501840 and id<>'4501840' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69495' and id > 4501840 and id<>'4501840' order by id asc limit 5