单项选择题
A.suction service valve as a vapor B.suction service valve as a liquid C.discharge service valve as a vapor D.charging valve as a liquid
Which of the fluids listed is normally used to condense...
单项选择题Which of the fluids listed is normally used to condense the primary refrigerant in a shipboard central air conditioning system?（）
A.Air or Nitrogen B.Seawater or Fresh water C.Sodium Nitrate brine D.Calcium Sulfate brine
The effective temperature of air is dependent upon（） Ⅰ....
The effective temperature of air is dependent upon（） Ⅰ.relative humidity Ⅱ.air velocity
A.Ⅰonly B.Ⅱonly C.Both Ⅰand Ⅱ D.NeitherⅠnor Ⅱ
When air is at its dew point it is at its（）A.lowest abs...
单项选择题When air is at its dew point it is at its（）
A.lowest absolute humidity B.lowest relative humidity C.highest absolute humidity D.highest relative humidity
