【名词&注释】
专用工具(special tool)、说明书(specification)、气缸套(cylinder liner)、不符合(inconformity)
[单选题]检验发现轴系的同轴度不符合(inconformity)要求,为了调整轴系状态,可采用()的修理方案。Ⅰ.调节第一道中间轴承位置;Ⅱ.调节各道中间轴承位置;Ⅲ.偏心镗削艉轴承;Ⅳ.改变主机位置;Ⅴ.改变局部中间轴承位置。
A. Ⅱ+Ⅲ
B. Ⅰ+Ⅱ+Ⅳ
C. Ⅲ+Ⅳ
D. Ⅰ+Ⅲ+Ⅳ
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学习资料:
[单选题]主机吊缸时,对大型超长冲程的气缸套,用说明书规定的专用工具和起吊方法,缸套从缸内拔出后,有时会出现机舱空间的高度不够,不能被顺利吊走。此时挡住缸套的是(),应对措施可以是()。
A. 该缸的缸头螺栓/拆掉该缸部分缸头螺栓
B. 相邻缸的缸头螺栓/拆掉部分缸头螺栓
C. 排气侧的管件/拆掉相应的管件
D. 该缸的缸头螺栓/拆掉该缸全部缸头螺栓
[单选题]The fuel injector injects a fine spray of fuel into the hot air and combustion (), producing much high pressure in the gases.
A. has begun
B. takes place
C. occurs
D. happe
[单选题]Clearance volume scavenging in a turbocharged, four-stroke/cycle diesel engine is accomplished ().
A. during the valve overlap period
B. with only the exhaust valve open
C. at a pressure below atmospheric
D. without cooling the cylinders or pisto
[单选题]Generating tubes in waste heat boilers are finned to ().
A. reduce gas flow turbulence
B. prevent exhaust gas corrosion
C. increase the rate of combustion
D. increase the rate of heat transfer
[单选题]The main purpose of the piston oil scraper rings is to ().
A. seal the space between the piston and the liner
B. reduce the amount of lube oil burned in the combustion chamber
C. transmit heat from the piston to the cylinder liner
D. damp out fluctuations of the piston side thrust
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