反应油气进入分馏塔的能过热段，与循环油浆逆接触，最先冷凝的是（）
A、油浆
B、水汽
C、回炼油
参考答案：A
补全对话
A: Excuse me. 1 ？
B: Bank? Go down this road and turn right at the third crossing, then turn left at the second crossing.
You can find a Bank.
A: How far is it ?
B: About ten minutes' walk. 2
A: Take the bus ? 3
B: The No.10 Bus. Is there a bus stop near here?
A: 4 . I'm a new policeman, you can ask him.
B: Thank you all the same.
A: 5 .
教学
