已知某用电设备的复阻抗的模为10Ω，R=6Ω，则其功率因数为（   ）。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69470' and id < 4499486 and id<>'4499486' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69470' and id > 4499486 and id<>'4499486' order by id asc limit 5