抽气充氮是保管茶叶较先进的方法，问小包装应用（）包装
A、聚乙烯袋
B、聚脂聚乙烯袋
C、聚脂铝箔聚乙烯袋
D、铝箔袋
参考答案：C
Had I got to the airport earlier, I _______ you.
A．might not miss to see
B．would not have missed seeing
C．should not miss seeing
D．would not have missed to see
当小区建立后，下列哪个传输信道不是必须的（）。
A.BCH
B.RACH
C.CPCH
D.PCH
