三相交流电源Y型连接，则Uab与UA相位关系说法错误的时（   ）。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69389' and id < 4493030 and id<>'4493030' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69389' and id > 4493030 and id<>'4493030' order by id asc limit 5