题目内容
60钴治疗机准直器其轴心线回转时轴心偏差不超过
2021-12-09
A.1mm
B.2mm
C.3mm
D.0.5mm
E.1.5mm
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='29142' and id < 2370922 and id<>'2370922' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29142' and id > 2370922 and id<>'2370922' order by id asc limit 5