《中国药典》2010年版规定,按干燥品计算,麝香中的麝香酮含量不得少于()
A.5.0%
B.3.0%
C.1.0%
D.2.0%
E.4.0%
参考答案:D
A cook will be immediately fired if he is found _____ in the kitchen. [ ]
A. smoke
B. smoking
C. to smoke
D. smoked
下列图形中箭头所指的"点"违背了West-gard基本质控规则中的().
A.41s
B.13s
C.22s
D.R4s
E.10xbaR