显示板、（）和加油机启停开关是主要的人机界面。

A、税控主板

B、计量主板

C、键盘板

D、防尘板

A: Hi! Aren’t we in the same English class
B: ().
A: Nice to meet you, Sue. I’m George.

A. How are you doing.

B. Yes, we are. My name’s Sue Deer.

C. Thank you very much.

D. It’s so wonderful to meet you.