玻璃瓶装果汁汽水的保质期是（）
A．3个月
B．6个月
C．12个月
D．24个月
E．18个月
参考答案：A
Maybe if I_____ science, and not literature then, I would be able to give you more help.
A．studied
B．wouldstudy
C．hadstudied
D．wasstudying
申请国家安全注册工程师注册的人员，必须同时具备下列条件有哪些？
