水炮泥具有（）的作用。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='33644' and id < 2686724 and id<>'2686724' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='33644' and id > 2686724 and id<>'2686724' order by id asc limit 5