设i（-∞）=0A,则电感元件在任何时刻t储存的磁场能量为0.5。（）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32669' and id < 2598576 and id<>'2598576' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32669' and id > 2598576 and id<>'2598576' order by id asc limit 5