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
单项选择题 Under normal conditions, the quantity of air circulation becomes less and less.What is the reason?（）
单项选择题 （）is used in typical marine pattern self-contained unit.
单项选择题 Which one is not the component of a typical, marine pattern self-contained unit?（）
