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单选题
The cylinder cover is not provided with （）.
A
fuel valve
B
lubricator
C
indicator valve
D
the starting valve
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B.cover up; paint over
C.cover over; paint over
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单选题In each cylinder cover there are two or three holes for （）A
the exhaust valvesB
the fuel valvesC
indicator cocksD
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单选题Fix the fuel injector into （） after repair.A
the cylinder linerB
the cylinder coverC
the cylinder jacketD
the piston
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单选题First aid treatment for small cuts and open wounds is to（）.A
lay the patient down and cover the wound when the bleeding stopsB
stop the bleeding，clean，medicate，and cover the woundC
apply an ice pack to the wound and cover it when the bleeding stopsD
apply a hot towel to purge the wound，then medicate and cover it
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单选题Which of the following conditions could contribute to the cracking of a diesel engine cylinder head?（）A
Leaking seal ringB
Insufficient heat transfer from the exhaust valvesC
Block cooling water passages to the headD
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单选题A practical way of checking for excessive fuel injection in one cylinder of an operating diesel engine is to （）A
feel the high pressure fuel lineB
check the cylinder exhausts for white smoke frequentlyC
check the cylinder exhaust temperatureD
isolate each cylinder and inspect the injector
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单选题Blow-off of the relief valves of the main cylinders during operation indicates （）.A
the cylinder cover is crackedB
the injector holes is cloggedC
the cams are not properly setD
fuel pump is leaking
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单选题In each cylinder cover is a large central opening for mounting （）A
the indicating cockB
the starting valveC
air inlet valveD
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单选题In order to inspect both piston and cylinder wall thoroughly, the cylinder cover should be taken off and the piston should be （）.A
craned outB
rolled outC
lifted outD
turned out
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单选题The most practical way of detecting an overload in one cylinder of an operating large, low-speed ,main propulsion diesel engine is to （）A
check the cylinder exhausts for black smokeB
listen for combustion knock in that cylinderC
isolate each cylinder and inspect the injectorD
check the cylinder exhaust temperature frequently
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单选题The joint face between the cylinder cover and the liner is arranged （）the combustion process as possible.A
such far away fromB
such near byC
as far away fromD
as near by
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单选题（）during the last repair?A
Did you have No.4 cylinder repairB
Do you have No.4 cylinder repairedC
Didn’t you have No.4 cylinder repairingD
Didn’t you have No.4 cylinder repaired
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单选题If water is found in the crankcase of a diesel engine, the cause may be due to（）A
a cracked cylinder headB
a leaky cylinder head gasketC
a cracked cylinder linerD
any of the above
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单选题On top of scavenging air box is mounted a strong cast iron frame for each cylinder known as（）A
cooling jacketB
cylinder linerC
piston crownD
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单选题On the top of the cylinder is mounted the cylinder cover which is pressed onto （） of the cylinder liner by means of nuts and studs.A
the camshaftB
the flangeC
the ridgeD
the bulge
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单选题A safety outlet is provided on the CO2 discharge piping to prevent（）.A
over pressurization of the space being floodedB
rupture of cylinder due to temperature increaseC
over pressurization of the CO2 discharge pipingD
flooding of a space where personnel are present
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单选题There is a support ring between the cylinder block and collar of the cylinder liner, thus carrying both the liner and the cylinder coverIt also passes to the cooling bores and to the cover（）A
cooling waterB
cooling oilC
refrigerantD
lubricate oil
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单选题Which of the following statements is correct for the design and installation of diesel engine cooling water systems?（）A
An alarm device with audible and visible signals is required for all cooling water systemsB
Propulsion engines with bores over 200 mm are to be fitted with cooling water jacketsC
Each totally enclosed cooling system shall be provided with a suitable head tankD
Drain cocks are to be provided at the lowest points of all cylinder water jackets
考题
单选题The cylinder covers and the liners are bolted together by means of （）.A
bolts welded into the cylinder headB
bolts welded into the cylinder framesC
studs screwed into the cylinder headD
studs screwed into the cylinder frames
考题
单选题Diesel engine cylinder head test cocks are used to （）A
check cylinder lubricationB
connect the pressure indicator pressureC
test cylinder headsD
connect the exhaust gas pyrometers
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单选题In some type of two-stroke engines, besides some small holes for（）, starting valve, safety valve, indicator cock, and central opening in each cylinder cover for mounting the（）A
fuel valves；exhaust valveB
exhaust valves；inlet valveC
fuel valves；inlet valveD
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