如图所示电路中，N为纯电阻网络，对于此电路，有（）。 

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='32669' and id < 2598569 and id<>'2598569' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32669' and id > 2598569 and id<>'2598569' order by id asc limit 5