下述哪种放射性核素在放射治疗中作为β射线源使用()。
A.钻一60
B.锶一90
C.铱一192
D.铯一137
E.碘一125
参考答案:B
As nobody here knows what is wrong with the machine, we must send for an engineer to _______ the problem.
A.handle
B.raise
C.face
D.present
水热互结伤阴的小便不利证,当选用()
A.猪苓散
B.猪苓汤
C.茯苓戎盐汤
D.栝蒌瞿麦丸
E.滑石白鱼散