虚拟电厂对（ ）具有重要作用。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69414' and id < 4494248 and id<>'4494248' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69414' and id > 4494248 and id<>'4494248' order by id asc limit 5