单项选择题
A.low viscosity index B.high viscosity index C.high neutralization number D.low demulsibility quality
Increasing the speed of a rotary pump above its rated s...
单项选择题Increasing the speed of a rotary pump above its rated speed will result in which of the following conditions to occur?（）
A.Loss of suction B.Increased clearances C.Decreased clearance D.Decreased slippage
The dew point of air is reached when the wet bulb tempe...
单项选择题The dew point of air is reached when the wet bulb temperature is （）.
A.Twice the dry bulb temperature B.10℃ above the dry bulb temperature C.5℃ above the dry bulb temperature D.Equal to the dry bulb temperature
Which of the listed problems could produce a high absol...
单项选择题Which of the listed problems could produce a high absolute pressure within a flash type evaporator?（）
A.Production of high salinity distillate B.Seawater feed temperature below 165℃ C.A leak in the first stage demister D.A cracked distillate pump vent line
