卫生注册企业()年内未出口注册范围内产品的,其卫生注册资格自动失效。
A.1
B.2
C.3
D.4
参考答案:A
自然铜煅制的目的是()
A.使药物酥脆、便于粉碎和煎出
B.使药物质地纯洁细腻,适宜于眼科及外敷用
C.产生止血的作用
D.增强收涩敛疮、止血化腐的作用
E.增强固涩收敛、明目的作用
— How I wish I had worked harder before the examinations.
— If you had, you _____them already.[ ]
A. would pass
B. would have passed
C. were to pass
D. will have passed