网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
Which harmful consequence may be the result of lube oil sludge accumulation? （）
A
Clogged oil pump suction screens
B
Increased oil operating temperatures
C
Sticking piston rings
D
All of the above
参考答案
参考解析
解析：
暂无解析
更多 “单选题Which harmful consequence may be the result of lube oil sludge accumulation? （）A Clogged oil pump suction screensB Increased oil operating temperaturesC Sticking piston ringsD All of the above” 相关考题
考题
Oil oxidation as a result of excessively high lube oil temperature, is harmful to a diesel engine BecauseA.oil foaming will always occurB.large quantities of oil are consumedC.lube oil viscosity is always decreasedD.corrosive by-products are usually formed
考题
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 oilB.refrigerant reducing the lube oil viscosityC.oxidation(氧化) of the lube oil from overheatingD.reducing the floc or cloud point of the oil
考题
Waste oil from the lube oil sumps of machinery may NOT be ______.A.drained into the vessel's bilgesB.reclaimed（回收的） for other usesC.held in a slop tankD.purified and then reused
考题
单选题Lube oil accumulating in the cooling water system of a diesel engine will result in （）A
lube cooler failureB
poor heat transferC
mechanical lubricator failureD
camshaft seizure
考题
单选题（）simplicity, we may put the theory briefly as follows.A
As a result ofB
For the sake ofC
In consequence ofD
In terms of
考题
单选题A dirty lube oil strainer can result in（）A
crankcaseB
low lube oil temperatureC
excessive oil consumptionD
low bearing oil pressure
考题
单选题A lube oil filter can be used to remove most contaminants from lube oilA contaminant which will remain in the lube oil after filtering is （）.A
acidB
fuel oilC
sedimentD
water
考题
单选题Excessive lube oil consumption can result from worn or broken（）A
piston ringsB
valve guidesC
valve sealsD
all of the above
考题
单选题Excessive oil foaming in the crankcase of a refrigeration compressor can result in （）.A
overheated compressor bearingsB
excess lube oil viscosityC
carbon deposits on the compressor piston ringsD
wax crystals forming in the lubricant
考题
单选题Which of the listed conditions can cause a diesel engine to use too much lube oil?（）A
Dirty lube oil filterB
Too much piston ring wearC
High lube oil viscosityD
Low lube oil temperature
考题
单选题The three conditions which cause engine shutdown are overspeed，low lube oil pressure，and（）.A
High lube oil pressureB
High jacket water pressureC
High jacket water temperatureD
Low jacket water pressure
考题
单选题Fuel oil contamination of an auxiliary diesel engine lube oil can result in（）A
an increased flash pointB
higher lube oil pressuresC
an increased viscosityD
lower lube oil pressures
考题
单选题A diesel engine is turned at normal cranking speed and no ignition occursThis could be the result of （）A
low lube oil temperatureB
low starting air temperatureC
air bubbles in the fuel oil systemD
water in the starting air system
考题
单选题During extremely cold weather, while starting an engine, it turns too slowly and fails to startThis problem is most likely the result of （）A
high fuel oil viscosityB
low fuel oil temperatureC
high lube oil viscosityD
energized glow plugs
考题
单选题Which of the following conditions can cause excessive lube oil consumption in a diesel engine?（）A
Low lube oil temperatureB
Dirty lube oil strainerC
Low lube oil pressureD
High lube oil temperature
考题
单选题Which of the following conditions indicates the dilution of diesel engine lube oil by fuel oil?（）A
Water discharging from the water outlet of the lube oil purifierB
Fuel oil discharging from the water outlet of the lube oil purifierC
Lube oil discharging from the water outlet of the lube oil purifierD
A change in the lube oil viscosity
考题
单选题A lube oil sample taken from the main engine lube oil system has dark yellow opaque color.This is the result of （）A
water contaminationB
mixing oils of two widely different viscositiesC
overheatingD
aeration
考题
单选题What condition will result in the automatic shutdown of a diesel engine? （）A
High jacket water pressureB
High lube oil pressureC
Low lube oil pressureD
Excessive turbo charger speed
考题
单选题Which of the following problems will occur if a disk-type centrifugal lube oil purifier is not properly primed prior to admitting oil flow to the bowl?（）A
Contamination of the lube oil by emulsification will resultB
The lube oil will not be subjected to the proper centrifugal forceC
The lube oil will overheat and flashD
Oil will discharge from the heavy phase discharge port and be wasted
考题
单选题Demulsibility of a lube oil is defined as （）.A
the ability of oil to separate from waterB
the temperature at which oil flows rapidlyC
a measure of the water in a lube oil systemD
an emulsion of different grades of oil
考题
单选题Sludge may form in the lubricating oil crankcase of a reciprocating air conditioning compressor as a result of （）.A
wax precipitation in the lube oilB
contamination by dust, scale, or moistureC
refrigerant bubbles in the lube oilD
refrigerant reducing the lube oil viscosity
考题
单选题Lube oil in the fresh water cooling system of a diesel engine may result from a （）A
camshaft seizureB
lube oil pump failureC
lube oil cooler failureD
lube oil pump overflow
考题
单选题High lube oil temperatures developing in a diesel engine can result from（）A
high oil pressureB
excessive bearing end playC
plugged oil control ringsD
engine overload
考题
单选题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 oilB
refrigerant reducing the lube oil viscosityC
oxidation of the lube oil from overheatingD
reducing the floc or cloud point of the oil
考题
单选题Waste oil from the lube oil sumps of machinery may NOT be （）.A
drained into the vessels bilgesB
reclaimed for other usesC
held in a slop tankD
purified and then reused
考题
单选题Which harmful consequence may be the result of lube oil sludge accumulation? （）A
Clogged oil pump suction screensB
Increased oil operating temperaturesC
Sticking piston ringsD
All of the above
考题
单选题Oil oxidation, as a result of excessively high lube oil temperature, is harmful to a diesel engine because （）A
oil foaming will occurB
large quantities of oil are consumedC
lube oil viscosity is always decreasedD
corrosive by-products are usually formed
考题
单选题Which of the following faults would allow lube oil to enter the cooling system of a diesel engine?（）A
Excessive valve train lubricationB
Leaking standby oil cooler coreC
Excessive lube oil pressureD
Excessive lube oil in the system
热门标签
最新试卷
