【名词&注释】
螺旋桨(propeller)、增压器(turbocharger)、燃烧室(combustion chamber)、长时间(long time)、喷油器(injector)、工作条件(working condition)、穿透性裂纹、排气阀阀杆
[单选题]Fuel is delivered into the combustion space by ().
A. a cooling system
B. a lubricating system
C. an electric system
D. an injection system
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学习资料:
[单选题]吊缸发现燃烧室零件表面有水锈时,表明()产生穿透性裂纹。
A. 活塞
B. 气缸
C. 喷油器
D. 气缸或活塞
[单选题]排气阀阀杆磨损超过标准要求时,可采用()工艺修复阀杆。也可以采用喷涂或喷焊工艺修复。
A. 镀铬或镀铁
B. 焊接
C. 堆焊
D. 镀铁
[单选题]增压器发生故障后锁住转子的措施简便,起到了缓解故障和防止故障扩大的作用,但缺点是()。
A. 破坏了与柴油机联合装置的工作
B. 需要具备短时停航的工作条件(working condition)
C. 长时间锁住转子将引起变形
D. 废气继续通过使转子受到高温作用
[单选题]测量螺旋桨螺距时采用的量具是()。
A. 螺距规
B. 直尺
C. 塞尺
D. 桥规
[单选题]To avoid scavenge fires () the engine timing and equipment maintenance should be correctly carried out.
A. occurred
B. occurring
C. not happening
D. occur
[单选题]A two-stroke diesel engine exhaust temperature will be lower than a four-stroke diesel engine of the same displacement because the ()(1) MEP is lower and the scavenging air is cooling the exhaust gases(2) valve overlap in a four-stroke
A. (1) only is correct
B. (2) only is correct
C. both (1) and (2) are correct
D. Neither (1) or (2) are correct
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