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单选题
In a diesel engine, an integral liner is one in which the cooling water （） Ⅰ.flows through the cylinder liner jackets Ⅱ.touches the outer side of the liner
A
Ⅰ only
B
Ⅱ only
C
both Ⅰ and Ⅱ
D
neither Ⅰ and Ⅱ
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单选题As a heat engine,（） energy is the source of power by which the diesel engine can be operated.A
electricB
heatC
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low compression pressureB
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单选题Which of the following procedures should be carried out when a large, low-speed, diesel engine is operated with one cylinder secured?（）A
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extended maximum power operationD
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单选题In a diesel engine, a cylinder liner should be replaced if it is （） Ⅰ.Scuffed Ⅱ.ScoredA
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low water in the expansion tankB
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low fuel oil pressureD
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casting interlocking componentsB
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单选题A pyrometer is an instrument used to measure the temperature of the diesel engine（）A
exhaustB
fuel oilC
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单选题Engine coolant accumulating in the diesel engine lubricating oil can result from a （）A
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单选题In a diesel engine, excessive cylinder liner wear will cause （） Ⅰ.increased blow-by Ⅱ.wear between the piston ring and grooveA
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考题
单选题Before engaging the turning gear and turning the diesel engine, which of the following operation should be done except（）A
open the indicator cocksB
supply some CYL Oil to cylinder liner wall with lubricator (only for two stoke diesel engine)C
put the fuel handle in the “stop” positionD
pump up the air bottle
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