根据电源和负载的连接方式，三相电路包括（    ）。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68466' and id < 4420877 and id<>'4420877' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68466' and id > 4420877 and id<>'4420877' order by id asc limit 5