对称三相负载星形联接，相电流，线电压，负载功率因数为（   ）。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69035' and id < 4471213 and id<>'4471213' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69035' and id > 4471213 and id<>'4471213' order by id asc limit 5