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单选题
Which of the following statements concerning cylinder liner wear is true?（）
A
Liner wear is distributed equally between the upper and lower portions of the cylinder
B
Excessive liner wear causes wear between piston ring and groove
C
Excessive, but uniform liner wear will not cause wear between piston ring and groove
D
Liner wear is normally greatest in the middle of the cylinder
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更多 “单选题Which of the following statements concerning cylinder liner wear is true?（）A Liner wear is distributed equally between the upper and lower portions of the cylinderB Excessive liner wear causes wear between piston ring and grooveC Excessive, but uniform liner wear will not cause wear between piston ring and grooveD Liner wear is normally greatest in the middle of the cylinder” 相关考题
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单选题Which of the following operation will have a direct impact on the rate of wear in a cylinder liner （）A
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单选题Which of the following statements concerning cylinder liner wear is true?（）A
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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 concerning the viscosity of lubricating oil?（）A
Viscosity will increase as temperature increasesB
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Viscosity will decrease as temperature decreasesD
Viscosity is not dependent on temperature
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单选题Which of the following problems may occur if the clearance between a piston and cylinder liner is insufficient?（）A
Excessive wearB
Scuffing of the linerC
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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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单选题The exhaust ports are located around the lower part of the cylinder liner, （）the products of combustion are driven by scavenging air.A
in whichB
by whichC
through whichD
from which
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