【名词&注释】
螺旋桨(propeller)、动力装置(power plant)、燃烧室(combustion chamber)、说明书(specification)、气缸套(cylinder liner)、表面积(surface area)、堆积物(accum)、喷油泵(fuel injection pump)、有效热效率(effective thermal efficiency)
[单选题]船上吊缸检修一般不必()。
A. 用通针疏通针阀体和喷孔
B. 清除燃烧室零件表面积炭
C. 拉出气缸套进行磁粉探伤
D. 清除气口堆积物(accum)
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学习资料:
[单选题]动力装置有效热效率(effective thermal efficiency)是指()。Ⅰ.每小时螺旋桨推力功的相当热量与同一时间内动力装置消耗的燃油完全燃烧所发出的总热量之比Ⅱ.3600kJ与动力装置每千瓦小时所消耗燃油(燃油消耗率的燃油)的热量之比
A. 仅Ⅰ对
B. 仅Ⅱ对
C. Ⅰ,Ⅱ都对
D. Ⅰ,Ⅱ都不对
[单选题]柴油机说明书规定的定期吊缸检修期是在其()进行。
A. A.早期故障期
B. B.随机故障中
C. C.随机故障期末
D. D.晚期故障开始
[单选题]位于喷油泵(fuel injection pump)和高压油管之间的出油阀,其作用有()。Ⅰ.止回;Ⅱ.便于排除空气;Ⅲ.缩短喷油迟后阶段;Ⅳ.控制高压油管中的剩余压力。
A. Ⅰ+Ⅲ+Ⅳ
B. Ⅰ+Ⅱ+Ⅳ
C. Ⅱ+Ⅲ
D. Ⅰ+Ⅱ+Ⅲ+Ⅳ
[单选题]() the supercharge pressure is, () power an engine develops.
A. The higher;the more
B. Higher;more
C. Higher;little
D. The higher;the le
[单选题]() are mounted on and bolted to the bed-plate cross girders.
A. The crankshaft
B. The crankcase
C. The guide-ways
D. The frame
[单选题]On a four-stroke diesel engine, when the piston is driven downwards by the expanding gas, it delivers power to the crankshaft through the ().
A. thrust block
B. sounding rod
C. connecting rod
D. push rod
[单选题]The lower end of each piston rod is reduced in diameter to fit a bore in (), this being secured to the piston rod by a nut.
A. the crank-web
B. the connecting rod
C. the main bearing
D. the cross-head
[单选题]The oil is drawn from a drain tank through (), one of a pair of pumps, into one of fine filters.
A. a strain tank
B. a head tank
C. a service tank
D. a strainer
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