抽出液塔顶蒸汽伴热的目的是为了防止冬季PX在空冷管束内发生冻结。()
参考答案:对
为减少浪费,烹调用的残油可回倒在新油中,重新再用。
— Would you like to go to the _____?
— Yes, I'd like to. I like pandas very much. [ ]
A. cinema
B. zoo
C. school
D. station