单项选择题
Which of the following terms would best describe the temperature at which a liquid boils at a given pressure?（）
A.Degree of saturation B.Saturation temperature C.Superheated temperature D.Degree of superheat
单项选择题 To thoroughly pump out the bilges using a horizontally mounted centrifugal pump, the （）.
单项选择题 The discharge head of a centrifugal pump will vary directly with the （）.
单项选择题 An increase in the heat load to a refrigeration system will cause （）.
