己知某负载无功功率Q=3kVar,功率因数为0.8,则其视在功率S为（）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32632' and id < 2594799 and id<>'2594799' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32632' and id > 2594799 and id<>'2594799' order by id asc limit 5