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Which of the following statements concerning the lubrication of diesel propulsionengines used in vessels over 300 gross tons is most accurate? ( )
A.Lubrication systems using engine driven lube oil pumps do not require any additionalindependent arrangement when such arrangements have been proven reliable.
B.The use of engine driven pre-lube pumps is permitted on vessels with propulsionsystems developing less than 500 shaft horsepower.
C.When forced lubrication is used for propulsion engines , one independently drivenstandby pumps is to be provided in addition to the necessary pumps for normaloperation.
D.Lubrication systems where two oil coolers are fitted require a minimum of twotemperature control devices which may be actuated by similar sensors.
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更多 “ Which of the following statements concerning the lubrication of diesel propulsionengines used in vessels over 300 gross tons is most accurate? ( )A.Lubrication systems using engine driven lube oil pumps do not require any additionalindependent arrangement when such arrangements have been proven reliable.B.The use of engine driven pre-lube pumps is permitted on vessels with propulsionsystems developing less than 500 shaft horsepower.C.When forced lubrication is used for propulsion engines , one independently drivenstandby pumps is to be provided in addition to the necessary pumps for normaloperation.D.Lubrication systems where two oil coolers are fitted require a minimum of twotemperature control devices which may be actuated by similar sensors. ” 相关考题
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A shipboard oil pollution emergency plan is required of ______.A.all vessels, regardless of size and commercial applicationB.any barge or other ship which is constructed or operated in such a manner that no oil in any form can be carried aboardC.an oil tanker of 150 gross tons or above, or other ship of 400 gross tons or aboveD.an oil tanker of 400 gross tons and above, or other ships of 150 gross tons and above
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单选题Which of the following statements concerning fuel atomization in a diesel engine cylinder is correct?（）A
The greater the atomization, the greater the penetrationB
The greater the atomization, the less the penetrationC
The degree of atomization has nothing to do with the degree of penetrationD
Atomization and penetration are one and the same
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单选题Which of the following statements represents the reason for rolling over a diesel engine with the cylinder indicator cocks open prior?（）A
To test the starting systemB
To remove air bubbles from the jacket waterC
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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
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单选题The tailshaft sealing arrangement found a little lube oil leaky and caused a lot of seawater into the bearing, the step should be taken as a makeshift is（）A
dropping lube oil for lubrication, reducing the pollution to the seaB
setting a temporary gravity oil tank and enhanced the position properlyC
lubricating with the used lube oilD
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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
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单选题A shipboard oil pollution emergency plan is required of （）.A
all vessels, regardless of size and commercial applicationB
any barge or other ship which is constructed or operated in such a manner that no oil in any form can be carried aboardC
an oil tanker of 150 gross tons or above, or other ship of 400 gross tons or aboveD
an oil tanker of 400 gross tons and above, or other ships of 150 gross tons and above
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单选题A shipboard Oil Pollution Emergency Plan is required of（）.A
all vessels，regardless of size and commercial applicationB
any barge or ship constructed or operated in such a manner that no oil in any form can be carried aboardC
an oil tanker of 150 gross tons and above，or other ship of 400 gross tons and aboveD
an oil tanker of 400 gross tons and above，or other ships of 150 gross tons and above
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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
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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
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单选题Which of the following statements concerning the lubrication of diesel propulsion engines used in vessels over 300 gross tons is most accurate?（）A
Lubrication systems using engine driven lube oil pumps do not require any additional independent arrangement when such arrangements have been proven reliableB
The use of engine driven pre-lube pumps is permitted on vessels with propulsion systems developing less than 500 shaft horsepowerC
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Lubrication systems where two oil coolers are fitted require a minimum of two temperature control devices which may be actuated by similar sensors
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单选题Which of the following statements is correct concerning diesel engine cooling water systems?（）A
Each engine must have its own engine driven cooling water pump capable of providing cooling for all ranges of operationB
propulsion engines with bores exceeding 200 mm are to be fitted with a means to display the cooling water temperature of each cylinderC
At least two independent sea suctions are to be provided for supplying water to the engine jackets or to the heat exchangersD
Suitable strain are to be fitted between the circulating pumps and heat exchangers when sea water is used for direct cooling
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单选题Diesel engine automated control systems may utilize sensing devices of dual function, with sensing ranges providing both alarm and engine shut down capability.Which of the key points would only require an alarm sensor?（）A
Lube oil pressure and temperatureB
jacket water pressure and temperatureC
Engine over-speedD
Lube oil sump level
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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
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单选题Fuel oil transfer systems used onboard diesel propelled vessels are required to have （）.A
two fuel oil transfer pumps provided where one is to be independent of the main engineB
two fuel oil transfer pumps, with a combined capacity exceeding the maximum consumption of the main engineC
engine driven transfer pumps and only used in constant speed applicationsD
the capacity of the engine driven pump exceed the consumption rate of the engine to which it is attached
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单选题On which vessels is GMDSS required? （）A
All vessels capable of international voyagesB
Vessels operating outside of the range of VHF coastal radio stationsC
SOLAS Convention ships of 300 gross tonnage or moreD
Coastal vessels of less than 300 gross tons
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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
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单选题Following an overhaul of a crosshead type diesel engine, the engine is jacked over with the turning gear as part of the pre-start procedure, which of the listed pre-start procedures should be carried out?（）A
Ensure proper cylinder lube oil flowB
Open all air space drain cocksC
Open all indicator valvesD
all of the above
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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 lubricationB
Leaking standby oil cooler coreC
Excessive lube oil pressureD
Excessive lube oil in the system
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单选题Before starting a diesel engine that has an engine driven lube oil pump, the engineer should （）.A
open the bypass lineB
cut in the lube oil coolerC
pressurize the lube oil systemD
top off the expansion tank
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单选题In a bypass type lubrication system for a diesel engine, the dirty oil line to the centrifuge should be taken from the （）.A
lube oil pump suction lineB
lube oil pump discharge lineC
bottom of the lube oil sumpD
outlet from the lube oil header
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单选题The lube oil pump used in a diesel engine is a （）.A
volute pumpB
centrifugal pumpC
diaphragm pumpD
gear pump
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单选题Lubricating oil systems for diesel engine journal bearings are usually lubricated by which of the following types of lubricating oil systems?（）A
SplashB
GravityC
PressureD
Bypass
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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
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