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问题 单项选择题

用皂膜流量计测量流量时，两刻度线之间的容积是500ml，皂膜通过的时间是66s，校准时气温是21℃，大气压为0.993×105Pa，问标准状况下流量是（）

A.410ml/min

B.414ml/min

C.422ml/min

D.446ml/min

E.455ml/min

答案

参考答案：E

选择题

— I got upset yesterday just because you didn't hand in your homework on time.  

— Terribly sorry. Ten more minutes, I ______ it to you. [ ]

A.would have taken 

B. would take    

C. had taken    

D. must have taken
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单项选择题 A1型题

治疗肾虚火旺证尿血的最佳方剂是

A．小蓟饮子

B．六味地黄丸

C．麦味地黄丸

D．知柏地黄丸

E．杞菊地黄丸
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