单项选择题
A.evaporation B.condensation C.liquefies D.vaporization
Under tropical conditions, control valves have fully op...
单项选择题Under tropical conditions, control valves have fully opened, but the room still hot.What measures can be taken in such a case?（）
A.Keep the plant running all time B.Start another blower C.Increase the ratio of circulated to fresh air D.Reduce the seawater flow to the condenser
Under normal conditions, the quantity of air circulatio...
单项选择题Under normal conditions, the quantity of air circulation becomes less and less.What is the reason?（）
A.dirty delivery ducts B.too much refrigerant C.the fouling filters D.high temperature outside
（）is used in typical marine pattern self-contained unit...
单项选择题（）is used in typical marine pattern self-contained unit.
A.a water cooled condenser B.a slop tank C.a expansion tank D.a centrifugal pump
