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

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

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

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

3.單項(xiàng)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(xiàng)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(xiàng)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

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As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?()

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The ISPS Code consists of a mandatory section-Part A, which shows()

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