【名词&注释】
热膨胀系数(thermal expansion coefficient)、密封性(sealing)、传热系数(heat transfer coefficient)、不一样(unlikeliness)、增加量(rate of increment)
[单选题]机泵的扬程是指()
A. 速度能增加量(rate of increment)
B. 位能增加量(rate of increment)
C. 压力能增加量(rate of increment)
D. 以上三者之和