设集合M= N= 则点P M是点P N （   ）

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='19888' and id < 1729000 and id<>'1729000' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='19888' and id > 1729000 and id<>'1729000' order by id asc limit 5