正确答案: B
before TDC
题目:In an ordinary diesel engine the fuel injection begins ()
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学习资料的答案和解析:
[单选题]检修活塞组件时,对表面的积炭应采用()予以清除。
机械清洗
[单选题]船用增压器轴承多采用滚动轴承,因其具有拆装方便,起动性能好、效率高、摩擦系数小等优点,但其缺点是()。
使用寿命有限制
[单选题]An electrically driven automatically operating auxiliary blower is provided for slow speed and () of a low speed diesel engine.
manoeuvring operations
[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 nut