單項(xiàng)選擇題Which one of the following is not generally recognized as one constitute of bilge water?()

A.Oil leaking from tanks inside engine room
B.Engine room cleaning water
C.Water leaking from the separator sludge tank
D.Sewage


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1.單項(xiàng)選擇題A centrifugal compressor’s purge recovery unit()

A.reclaims water
B.purges air without losing refrigerant
C.purges air with some loss of refrigerant
D.purges lube oil from the refrigerant

3.單項(xiàng)選擇題The humidity of the atmosphere can be determined by the use of the()

A.anemometer
B.potentiometer
C.manometer
D.psychrometer

4.單項(xiàng)選擇題In a centrifugal Freon refrigeration system, the overall capacity of the system is increased by()

A.opening more bypass lines
B.opening additional expansion valves
C.adding refrigerant
D.speeding up the machine