美国医学物理学家学会(AAPM)规定加速器X射线的稳定性每日监测的允许误差为

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='29523' and id < 2401481 and id<>'2401481' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29523' and id > 2401481 and id<>'2401481' order by id asc limit 5