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

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单项选择题

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

单项选择题

A.lowest absolute humidity
B.lowest relative humidity
C.highest absolute humidity
D.highest relative humidity

单项选择题

A.dry bulb temperature
B.wet bulb temperature
C.dew point
D.dry point