应用基尔霍夫定律列写方程式时，可以不设置参考方向。( )

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='32627' and id < 2594518 and id<>'2594518' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32627' and id > 2594518 and id<>'2594518' order by id asc limit 5