Speaker A: Excuse me, sir. Can you tell me where the bus stop for Hyde Park is
Speaker B: ().

A. Of course. I’m glad to tell you where it is.

B. Yes. Turn right and walk two blocks and you’ll find a bus stop sign.

C. Sorry, I’m too busy to lead you to the nearest bus stop.

D. Just a moment. I have to figure out the best way to get there.

安装法兰垫片时（）。

A.只允许安装一层垫片；

B.可以安装两层垫片；

C.可以安装三层垫片；

D.垫片层数不受限制。