异步电动机的功率因数（    ）。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69326' and id < 4488150 and id<>'4488150' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69326' and id > 4488150 and id<>'4488150' order by id asc limit 5