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单选题
The position of （） on the crosshead on a large diesel engine is determined by dowel pins.
A
the guideway
B
the piston rod
C
the crosshead shoes
D
the interlocked circlip
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单选题（） can be found on most medium to large merchant vessels even if the main engine is either a steam turbine or 2-stroke crosshead engine.A
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单选题Which of the following procedures should be carried out to permit the use of a crosshead engine with an inoperable after-cooler?（）A
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单选题Starting a large low-speed propulsion diesel engine on diesel fuel during cold weather conditions, will be made easier by （）A
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Cooling water temperature to the engine should be increasedC
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单选题The power developed by a large slow-speed main propulsion diesel engine is dependent upon the （）A
quantity of air it takes in and retains in the cylinders during a given time periodB
proportion of trapped air that is utilized in the combustion processC
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单选题Large marine diesel engines of crosshead construction generally have two systems of lubrication: a total loss system feeding the （） and a recirculation system lubricating the running gear and cooling the piston.A
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单选题The main function of tie rods in the construction of large, low speed diesel engines is to（）.A
stiffen the bedplate in way of the main bearings to increase the engines longitudinal strengthB
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单选题Following the failure of one turbocharger on a large, crosshead, main propulsion diesel engine, fitted with multiple turbochargers, which of the following actions should be taken prior to further operation of the engine? （）A
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Secure cooling and lubrication to the damaged turbochargerC
Lock the rotor of the damaged turbochargerD
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ColumnC
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单选题A large two-stroke/cycle direct reversing diesel engine is to be reversedPrior to the admission of starting air you must （）A
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单选题A large, low-speed, crosshead, main propulsion diesel engine using residual fuel oils must have a cylinder oil having a （）A
low TBN valueB
high alkaline reserveC
low flash pointD
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考题
单选题On a large diesel engine installation, crankshaft axial alignment is maintained by the （）A
piston rod guidesB
engine thrust bearingC
crosshead bearingD
main shaft flexible coupling
考题
单选题The position of （） on the crosshead on a large diesel engine is determined by dowel pins.A
the guidewayB
the piston rodC
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the interlocked circlip
考题
单选题Which of the listed pre-start procedures should be carried out prior to starting a crosshead type diesel engine after an overhaul?（）A
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Open all indicator valvesD
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考题
单选题The closing of the exhaust valves used on a modern, large, low-speed, main propulsion diesel engine may be directly provided by （）.A
large conical springsB
compressed air pressureC
hydraulic pressureD
exhaust gas pressure
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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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