若将图（a）所示电路等效变换为图（b）电路，问R（） 

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='32670' and id < 2598690 and id<>'2598690' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32670' and id > 2598690 and id<>'2598690' order by id asc limit 5