以下关于计算机维护的叙述中，不正确的是（21).

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='29746' and id < 2415065 and id<>'2415065' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29746' and id > 2415065 and id<>'2415065' order by id asc limit 5