题目内容
在爆炸性粉尘环境中应使用防爆电机。. ( )
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='24820' and id < 2121819 and id<>'2121819' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24820' and id > 2121819 and id<>'2121819' order by id asc limit 5