水在锅炉内加热汽化,所吸收的热量等于水的初终状态的()。
A.温度变化
B.压力变化
C.熵的变化
D.焓的变化
参考答案:D
小题1:Zhang Ming’s cousin will celebrate his __________ (第十二) birthday this coming Friday.
小题2:The runner’s dream is to break the world ___________ (记录) of the 100-metre race.
小题3:Lin Tao always speaks to the elderly ___________ (礼貌地) and they all like him.
小题4:The Palace Museum is __________ (of value) to not only China but also the world.
小题5:Some people don’t _________ (get to know) the importance of health until they have lost it.
广泛采用的完井方法是()。
A.裸眼完井
B.套管或尾管射孔完井
C.割缝衬管完井
D.砾石充填完井