闭式电网有两端供电网络和环形网络两种基本形式。（）

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='32640' and id < 2595473 and id<>'2595473' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32640' and id > 2595473 and id<>'2595473' order by id asc limit 5