Speaker A: I can’t stand the school cafeteria. The food is terrible.
Speaker B: ().

A. I agree with you. It’s quite difficult to find a seat in the cafeteria.

B. Yeah, you will feel more comfortable if you sit down.

C. Yeah, but that’s not the worst thing about it. It’s also very dirty.

D. I don’t see why they don’t supply some seats for us.

参数固态继电器可以（）和各种敏感元件构成自动控制系统。

A.直接

B.有隔离