题目内容
低压绝缘材料的耐压等级一般为500 V。
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='27218' and id < 2260300 and id<>'2260300' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27218' and id > 2260300 and id<>'2260300' order by id asc limit 5