【单选题】为了获得较高的尿素转化率,实际生产中采取的措施是:()
【简答题】韩国全称是 ,韩国的为 ,现任总统 ,主要民族为
【判断题】韩国的英文全称是South Korea。
【单选题】"那里有很多不错的餐厅”的正确表达是( )。
A.
There is many great restaurants there.
B.
There has many great restaurants there.
C.
There have many great restaurants there.
D.
There are many great restaurants there.
【单选题】为了提高冷、热流体间的平均传热温差,在实际生产中,除特殊情况外,一般都采用()操作。