图中，电容器由电源通过R充电，然后换路后向尼放电，如<,则（）。 

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32672' and id < 2598973 and id<>'2598973' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32672' and id > 2598973 and id<>'2598973' order by id asc limit 5