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Cooling of engines is achieved by circulating a cooling liquid around internal ______within the engine.
A.air
B.passages
C.pipes
D.means
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更多 “ Cooling of engines is achieved by circulating a cooling liquid around internal ______within the engine.A.airB.passagesC.pipesD.means ” 相关考题
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单选题Auxiliary diesel engines can be automatically shut down as a result of （）A
low lube oil temperatureB
low lube oil pressureC
high exhaust temperatureD
high cooling water pressure
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单选题Cooling of engine is achieved by circulation a cooling liquid around internal passages within the （）.A
boilerB
heaterC
engineD
cooler
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单选题In order to control thermal stresses, some types of modern engines use pistons with（）A
heavy wall and intensive coolingB
heavy wall and no coolingC
thin wall and no coolingD
thin wall and intensive cooling
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单选题The cooling of the piston is carried out by circulating （） across the underside of the crown and inside the ring belt or through specially shaped passages.A
sea waterB
scavenging airC
lubricating oilD
fuel oil
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单选题Which of the following problems could cause the high pressure cutout switch to shut down the compressor in a refrigeration system?（）A
A shortage of liquid refrigerantB
Excessive frost on the evaporatorC
Excessive condenser cooling waterD
Insufficient condenser cooling water flow
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单选题The cooling liquid used for the cylinder may be referred to as （）.A
jacket waterB
make-up waterC
boiler waterD
flushing water
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单选题Which of the following accurately describes the meaning of redundant cooling？（）A
The source of cooling to a RAID systemB
The cooling system in a redundant power supplyC
A cooling system that can be installed in case of failureD
A second cooling system in case of a failure
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单选题The space between cylinder liner and jacket is called （）.A
the circulating tankB
the scavenge boxC
the cooling water spaceD
the cooler
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单选题Cylinder liners from older lower powered engines had a uniform wall thickness and the cooling was achieved by circulating cooling water through a space formed between （）.A
crown and skirtB
liner and jacketC
ring and grooveD
jacket and block
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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If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.A
loss of suction in the circulating pumpB
leak in the primary cooling systemC
broken raw water pump shaftD
burned or cracked piston in one cylinder
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单选题（）diesel engines generally have two systems of lubrication:（）a total loss system feeding and a circulating system lubricating the running gear and cooling the pistons.A
Large crosshead type；crossheadsB
High speed；the cylindersC
Large crosshead type；the cylindersD
Four-stroke；pistons and cylinders
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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
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单选题Some diesel engines are fitted with a thermometer in the cooling water outlet from each cylinderIf the cooling water temperature from all cylinders begins to rise above normal, you should suspect （）A
increase blow-by in all cylindersB
incomplete combustion in all cylinderC
overloading in all cylindersD
insufficient fuel delivery to all cylinders
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