妇人崩漏,伴面色无华、神疲、食欲不振,可灸下列何穴治疗()。
A.太白
B.大敦
C.厉兑
D.隐白
E.行间
参考答案:D
I told you that you shouldn't waste your time playing the computer games,_____________?
A.didn't I
B.did I
C.should you
D.shouldn't you
采样效率太低的方法和仪器不能采用,一般认为,空气样品的采样效率最好不低于()
A.95%
B.90%
C.85%
D.80%
E.70%