有无菌检查项目的原料药精制、币燥、包装生产是()
A.1万级洁净区
B.30万级洁净区
C.一万级背景下局部100级
D.10万级洁净区
E.百级洁净区
参考答案:C
I have _____ chores to do today that I can't go out with you. [ ]
A. so much
B. such many
C. so many
D. such
预防麻疹、乙肝等传染病最有效、最经济的措施是什么?