【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
【简答题】单项选择 1. you tell me what’s happening over there ? A. Could B. May C. Might D. Shall 2. I have a word with the manager ,sir ? A. Will B. Would C. May D. Can 3. - Something flyi...
【单选题】(1)障碍物到观察屏的距离为无限大的衍射叫夫朗和费衍射;(2)惠更斯—菲涅耳原理只适用于菲涅耳衍射。
【简答题】I would like to make a sincere apology for any inconvenience if we weren’t able to satisfy some of your needs despite all our efforts.
【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】喷油器脏污后汽油雾化不良,燃烧不充分,会导致油耗增加,有害排放物超标。