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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 lubrication
B
Leaking standby oil cooler core
C
Excessive lube oil pressure
D
Excessive lube oil in the system
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更多 “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” 相关考题
考题
Which of the following is operated from the main engine room console on an automated vessel?A.Fire pump and lube oil pumpB.Lube oil pump and distilling plantC.Distilling plant and shaft alley doorD.Shaft alley door and fixed CO2 release
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Which of the following devices would allow a technician using a packet sniffer to view all the dataon a network?()
A.GBICB.HubC.BridgeD.Modem
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Which one of the following commands would you enter to terminate a VTY line session?（）A、closeB、disableC、disconnectD、suspendE、exitF、None of the above
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Which of the following devices would allow a technician using a packet sniffer to view all the dataon a network?（）A、GBICB、HubC、BridgeD、Modem
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Which of the following would need to be implemented on a wireless router to allow network accessbased on a passphrase that the administrator would supply?（）A、WPA-PSK encryptionB、SSID broadcastC、Port forwardingD、MAC filtering
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Which of the following tools would allow an administrator to push out a software update to allswitches on the network?（）A、Network managementB、Protocol analyzerC、Network monitoringD、System diagnostic
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单选题Which of the listed problems would be indicated by an accumulation of water in one cylinder, in addition to the crankcase of an idle diesel engine?（）A
Excessive cylinder linerB
water in the fuel systemC
Cracked cylinder linerD
Leaking lube oil cooler
考题
单选题Which one of the following commands would you enter to terminate a VTY line session?（）A
closeB
disableC
disconnectD
suspendE
exitF
None of the above
考题
单选题Which of the following problems represent one possible cause of high lube oil consumption in a four stroke diesel engine?（）A
Worn intake valve guidesB
Pitted pre-combustion chambersC
Loose valve tappetsD
High exhaust back 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Which of the following would cause a diesel to have black smoke?（）A
leaky injectorB
water in the gasC
too heavy oilD
water in the oil
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In a diesel engine lube oil system, which of the following parts should be lubricated first?（）A
Camshaft beatingsB
Main bearingsC
Piston crownsD
Cylinder walls
考题
单选题Which of the following is operated from the main engine room console on an automated vessel?（）A
Fire pump and lube oil pumpB
Lube oil pump and distilling plantC
Distilling plant and shaft alley doorD
Shaft alley door and fixed CO2 release
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Which of the following characteristic of lube oil helps to reduce the amount of deposits in the piston ring belt during the combustion process in a diesel engine?（）A
Low viscosity indexB
Low carbon forming tendenciesC
High film strengthD
High non-corrosive qualities
考题
单选题At which of the following locations would a duplex pressure gage most likely be located?（）A
Fuel oil service pump dischargeB
Fuel oil strainerC
Fuel oil heaterD
Fuel oil flow meter
考题
单选题Which of the following conditions could be a cause of excessive fuel dilution of diesel engine lube oil?（）A
Leaking fuel injectorsB
Lower than normal compressionC
Delayed fuel injectionD
All of the above are correct
考题
单选题When fuel oil is accidentally missed with lube oil which of the following processes can be used to separate them?（） Ⅰ.filtering Ⅱ.settlingA
Ⅰ onlyB
Ⅱ onlyC
either Ⅰ or ⅡD
neither Ⅰ or Ⅱ
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Which of the following operating procedures should be carried out immediately after any diesel engine is started?（）A
Take all exhaust temperature readingB
Check the sump oil levelC
Verify proper lube oil pressureD
All of the above
考题
单选题Which of the following operational conditions will occur to the diesel engine lube oil at extremely high temperature?（）A
The oil oxidizes and forms carbon depositsB
The viscosity increasesC
Engine oil consumption decreasesD
Lubricating qualities of the oil are enhanced
考题
单选题Which of the following conditions will develop if the flow of ‘raw’ cooling water to diesel engine is obstructed?（）A
Air will enter the cooling systemB
Carbon will plug the water cooled exhaust manifoldsC
The jacket water temperature will riseD
The lube oil viscosity will increase
考题
单选题These acid residues must be prevented from entering the crankcase, otherwise the lube oil would be（）A
contaminatedB
emulsifiedC
deterioratedD
oxidated
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