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='27217' and id < 2260336 and id<>'2260336' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27217' and id > 2260336 and id<>'2260336' order by id asc limit 5