两器同高并列式催化裂化装置,只能采用固定床反应器。
查看答案
Theoretical perfect combustion in a diesel engine yields by-products of ().
A. aldehydes and carbon dioxide
B. water vapor and carbon monoxide
C. nitrogen and carbon monoxide
D. water vapor and carbon dioxide
When two vessels are in immediate danger of collision,the stand-on vessel must().
A. abandon ship
B. assist in taking whatever action is necessary to avoid collision
C. hold course and speed
D. sound a distress signal
A320飞机的登机音乐系统提供3个节目选择,由前乘务员面板控制播放。
A. 正确
B. 错误
将汉字输入计算机是通过不同的输入法实现的,我们常用的有拼音、五笔字型、国际/区位、自然码、钱码、郑码等输入法。
A. 正确
B. 错误