单项选择题
A.vaporize, with the unflashed water remaining at the temperature at which it entered the flash chamber
B.vaporize, with the unflashed water equalizing to the saturation conditions existing in the flash chamber
C.vaporize, with the remaining water at the temperature greater than it entered the flash chamber
D.boil, allowing steam bubbles to rise through the brine at the bottom of the flash chamber
单项选择题 In a refrigeration system, which of the following statements describes the actions occurring when a solenoid valves, used in conjunction with an unloader head is energized?（）
单项选择题 The efficiency and output capacity of a low pressure distilling plant will be reduced if the last effect shell （）
单项选择题 In most pumps and pump motors overpacking the ball bearings full of grease will result in （）