应用结点电压法求解电路时，参考点可要可不要。（）

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='32629' and id < 2594650 and id<>'2594650' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32629' and id > 2594650 and id<>'2594650' order by id asc limit 5