题目内容
NH N0 受热后易分解,但放出的气体无害。
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='30401' and id < 2457726 and id<>'2457726' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30401' and id > 2457726 and id<>'2457726' order by id asc limit 5