refrigerant bubbles in the lube oil
refrigerant reducing the lube oil viscosity
oxidation of the lube oil from overheating
reducing the floc or cloud point of the oil
第1题：
Sludge may be formed in the oil in the crankcase of a reciprocating air conditioning compressor as a result of ______.
A.refrigerant bubbles in the lube oil
B.refrigerant reducing the lube oil viscosity
C.oxidation(氧化) of the lube oil from overheating
D.reducing the floc or cloud point of the oil
第2题：
The ______is used to burn oil sludge.
A.clarifier
B.oily water separator
C.incinerator
D.distiller
第3题：
Crankcase explosions in propulsion diesel engines result from ____.
A.the splashing of lubrication oil by the crankshaft
B.the dilution of crankcase oil with particles of combustion
C.broken fuel lines spraying oil on the crankcase
D.the ignition of unburned fuel and air in the crankcase
第4题：
overheated compressor bearings
excess lube oil viscosity
carbon deposits on the compressor piston rings
wax crystals forming in the lubricant
第5题：
a shortage of refrigerant in the system
air in the system
an accumulation of liquid refrigerant in the crankcase
a shortage of oil in the crankcase
第6题：
Sludge may form in the crankcase of an air conditioning compressor as a result of ______.
A.bubbling refrigerant
B.overheating and oxidation
C.lowered operating temperatures
D.reducing the cloud or floc point
第7题：
To satisfy
To be satisfied
After satisfying
After being satisfied
第8题：
What is the most usual reason for the fresh water-sea water heat exchanger fouling in the sea side?
A.lube oil sludge accumulating in it
B.dirt and scale etc , formed on the surfaces
C.deformation of the tubes and the shell or the plates
D.lube oil leakage into sea-water side
第9题：
excessive crankcase pressure
excessive lube oil temperature
contamination of the lube oil by water
contamination of the cooling water by lube oil
第10题：
bubbling refrigerant
overheating and oxidation
lowered operating temperatures
reducing the cloud or flash point