补全对话。

A: What are you going      1         2      when you      3     up?

B: I'm going to be a baseball      4    .

A:      5    are you going to do that?

B: I'm going to      6     baseball every day.

A:     7     are you going to practice?

B: I'm going to practice in the sports center.

A:      8     do you       9     there?

B: I get there    10     a bike.

1.______2.______3.______4.______5.______

6.______7.______8.______9.______10.______

说明用作小闸的空气制动阀在缓解位和制动位时的工作过程。