对于一级负荷比例比较大的电力用户，应采用的电力系统接线方式为(    )。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69458' and id < 4498222 and id<>'4498222' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69458' and id > 4498222 and id<>'4498222' order by id asc limit 5