题目内容
高能X线的能量范围是
2021-12-09
A.10〜60kV
B.60〜160kV
C.180〜400kV
D.2〜25MV
E.5〜10MV
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='29144' and id < 2370998 and id<>'2370998' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29144' and id > 2370998 and id<>'2370998' order by id asc limit 5