有n个结点，b条支路的电路图，必有n条树支和b-n+1条连支。（）

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='32670' and id < 2598814 and id<>'2598814' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32670' and id > 2598814 and id<>'2598814' order by id asc limit 5