两个电容器，其电容均为6F，将他们并联后其总电容为（   ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69474' and id < 4499597 and id<>'4499597' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69474' and id > 4499597 and id<>'4499597' order by id asc limit 5