普通接收系统和最佳接收系统，其性能表示式在形式上是相同的，由于实际带通滤波器带宽B总

阅读下面对话，从方框内7个选项中选择5个恰当的句子完成此对话。

A．This way，please． B．What can I do for you? C．Do you live here? D．5 yuan each. E．What time is the last one? F．It's my pleasure． G．It takes forty minutes．

A: Excuse me, sir?
B: Yes?   1 
A: I want to go to the train station, but I don't know how to get the ticket from the TVM  (自动售票机).
B:   2  Well, just press here.
A: How much is the ticket?
B:   3  
A: All right. By the way, how often do the trains come?
B: About every six minutes.
A:   4  
B: At 11:00 pm.
A: OK. Got it. Thanks for your help.
B:    5
A: Goodbye!
B: Bye- bye !