下列属于强腐蚀类的试剂有：（ ）。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='30401' and id < 2457677 and id<>'2457677' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30401' and id > 2457677 and id<>'2457677' order by id asc limit 5