單項選擇題The advantages of flash type evaporators, as compared to submerged tube type evaporators, include ().

A.less internal corrosion because of lower brine density
B.higher temperature evaporation for lower salinity of the distillate produced
C.less scale formation in a flash evaporator
D.less feed-water required for a flash evaporator


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1.單項選擇題The ()is used to burn oil sludge.

A.clarifier
B.oil/water separator
C.incinerator
D.distiller

2.單項選擇題Which is the pollution prevention equipment?()

A.booster pump
B.evaporator
C.incinerator
D.cooler

3.單項選擇題Sludge may form in the lubricating oil crankcase of a reciprocating air conditioning compressor as a result of ().

A.wax precipitation in the lube oil
B.contamination by dust, scale, or moisture
C.refrigerant bubbles in the lube oil
D.refrigerant reducing the lube oil viscosity

4.單項選擇題In a chilled water air conditioning unit using a reciprocating compressor, the refrigerating effect of the primary refrigerant can be increased by ().

A.increasing refrigerant pressure in the coil
B.increasing chilled water flow through the cooler
C.sub-cooling the refrigerant in the condenser
D.superheating the refrigerant in the compressor

5.單項選擇題A re-heater in an air conditioning system functions to ().

A.control inlet air temperature
B.control inlet air volume
C.maintain relative humidity at 15%
D.restore conditioned air temperature to a comfortable level