【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:()
【判断题】在实际生产、生活应用中,为了提高功率因数,可以采用串联谐振,也可以采用并联谐振。
【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。