药品生产验证包括
A.系统验证
B.设备安装、运行、性能确认
C.厂房验证
D.设施安装、运行、性能确认
E.产品验证
参考答案:B,C,D,E
— You were out when I dropped in at your house.— Oh, I ____ for a friend from England at the airport.
燃气是人工煤气、()、液化石油气三类的统称。
A.天燃气
B.沼气
C.油制气
D.煤气