对称的三相电源作△形联接时，如果接法不正确，电源回路中将有电流。（   ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69472' and id < 4500099 and id<>'4500099' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69472' and id > 4500099 and id<>'4500099' order by id asc limit 5