某药物一级速率常数为1.7478×10-4[天]-1，其有效期为A．5.05年 B．

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问题单项选择题

某药物一级速率常数为1.7478×10^-4[天]^-1，其有效期为

A．5.05年

B．1.10年

C．2.00年

D．1.50年

E．1.65年

答案

参考答案：E

选择题

Not until years later _____ their leading position in the marketplace with the creation of Swatch watches.

A．the Swiss regained

B．the Swiss has regained

C．did the Swiss regain

D．has the Swiss regained

选择题

It is generally believed that teaching is _____ it is a science.[ ]

A. an art much as

B. much an art as

C. as an art much as

D. as much an art as