三相负载三角形连接时，线电压总等于相电压。（     ）   

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68472' and id < 4420972 and id<>'4420972' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68472' and id > 4420972 and id<>'4420972' order by id asc limit 5