图示电路原已稳定，t=0闭合开关，t>0的电容电压的大小为（）。 

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32672' and id < 2598928 and id<>'2598928' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32672' and id > 2598928 and id<>'2598928' order by id asc limit 5