已知电路如图所示，若，则t>0时，i（t）等于（）. 

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32669' and id < 2598596 and id<>'2598596' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32669' and id > 2598596 and id<>'2598596' order by id asc limit 5