【名词&注释】
使用寿命(service life)、摩擦系数(friction coefficient)、滚动轴承、船用增压器(ship turbocharger)、效率高(high efficiency)、性能好(good performance)、增压器轴承(turbocharger ' s bearing)
[单选题]In an ordinary diesel engine the fuel injection begins ()
A. after TDC
B. before TDC
C. after BDC
D. before BDC
查看答案&解析
查看所有试题
学习资料:
[单选题]检修活塞组件时,对表面的积炭应采用()予以清除。
A. 常规清洗
B. 机械清洗
C. 化学清洗
D. 以上均可
[单选题]船用增压器轴承(turbocharger s bearing)多采用滚动轴承,因其具有拆装方便,起动性能好(good performance)、效率高、摩擦系数小等优点,但其缺点是()。
A. 使用寿命有限制
B. 结构复杂
C. 损坏后易引起振动
D. 无法检修
[单选题]An electrically driven automatically operating auxiliary blower is provided for slow speed and () of a low speed diesel engine.
A. manoeuvring operations
B. bad combustion
C. cooling
D. mooring trial
[单选题]The lower end of each piston rod is reduced in diameter to fit a bore in the cross-head, this being secured to the piston rod by ().
A. a bolt
B. a cap
C. a disc
D. a nut
本文链接:https://www.51bdks.net/show/lqyxn9.html