()3-位有甲基,7-位有2-氨基苯乙酰氨基。
A.头孢氨苄
B.头孢羟氨苄
C.头孢噻吩钠
D.头孢噻肟钠
E.头孢哌酮
参考答案:A
解析:
头孢氨苄
--Have you finished your work yet?
---No, not yet. I think it'll take _____ ten minutes
A.another
B.other
C.others
D.more
赵州桥又称安济桥,初建于( )初期,P133
A.隋
B.唐
C.宋
D.元