己知某正弦交流电压其有效值是（）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32632' and id < 2594776 and id<>'2594776' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32632' and id > 2594776 and id<>'2594776' order by id asc limit 5