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

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


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

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

2.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

3.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

4.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

5.單項選擇題If one of the bilge system manifold valves does not properly seat, the ()

A.bilge well connected to that valve, plus the second bilge well being pumped will be completely emptied
B.bilge system will lose vacuum and prevent the other bilges from being pumped out
C.bilge well aft connected to that valve will siphon its contents to the forward bilge wells
D.discharge pressure will be too high