原油经过初馏塔,从初馏塔塔顶蒸出的轻汽油,也称()。
参考答案:石脑油
–Would you mind us asking you a few questions?
–_______.
A.Yes. Go ahead.
B.Not at all. You’d better not.
C.Not at all. Go ahead
D.No. I don’t mind.
该市城镇居民的人均工作时间比农村居民少()。
A.5.7%
B.5.4%
C.5.1%
D.4.8%