60钴治疗机等中心误差应不大于

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='29520' and id < 2401133 and id<>'2401133' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29520' and id > 2401133 and id<>'2401133' order by id asc limit 5