变压器的高.低压绝缘套管是引出变压器的高.低压绕组引线，并起对地绝缘作用。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68478' and id < 4421450 and id<>'4421450' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68478' and id > 4421450 and id<>'4421450' order by id asc limit 5