电力系统不对称短路包括几种短路类型(    )

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69456' and id < 4498135 and id<>'4498135' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69456' and id > 4498135 and id<>'4498135' order by id asc limit 5