三相三线连接电路，只要负载不对称，就会发生中性点偏移现象。（   ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69389' and id < 4493054 and id<>'4493054' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69389' and id > 4493054 and id<>'4493054' order by id asc limit 5