要为吃便餐的客人提供（）的食品。
A.快捷、丰盛
B.方便、实惠
C.有特色
D.正宗风味
参考答案：B
---What can I do for you, Sir?
---It is not you waiters but ____ is in charge of the restaurant ___ I want to talk to.
A．whoever; that
B．who; that
C．that; who
D．that; whom
转化气废热锅炉换热器内漏，会使（）
A、锅炉给水量增大
B、锅炉给水量降低
C、中变入口温度升高
D、中变床层温度升高
