【判断题】一氧化碳是合成甲醇的主要原料,因此在进入合成塔之前没有必要进行变换反应。
【判断题】双甲工序的主要任务一是合成甲醇,二是净化合成氨原料气
【多选题】工业上生产甲醇基本都是选择合成法,即用含碳原料转化为碳化合物,然后再合成甲醇。含碳原料主要有?
【单选题】 We have told him many times, but he________ listen to our advice.
【简答题】第二节 完形填空(共20小题;每小题15分,满分30分) 阅读下面短文,从短文后各题所给的四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。 We arrived at the hospital to find Dad was very weak, but his smile was as 36 as ever. It was another attack o...
【单选题】Man reach the moon or any other star in the universe now, but we get there years ago.
B.
are able to…weren’t able to
【判断题】MTO合成路线是以天然气为主要原料,生产合成气,合成气再转化成甲醇,然后甲醇生产烯烃的路线,完全不依赖于石油。