已知=4V,==2Ω,=3Ω,L=1H换路前已达稳态，=（）。 

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='32672' and id < 2598965 and id<>'2598965' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32672' and id > 2598965 and id<>'2598965' order by id asc limit 5