麻黄碱(麻黄素)(非制剂) ( )
A.20
B.33
C.17
D.30
参考答案:B
解析:归税号2939.9100。根据29章税目条文,按具体品目列名归类。
It was in 1969 ___ the American astronauts first succeeded in landing on the moon.
A.that
B.when
C.which
D.in which
Windows 2000是基于下列哪一个版本的Windows操作系统发展而来的
A.Windows 98
B.Windows Me
C.Windows XP
D.Windows NT