题目内容

A sudden drop in compression pressure in one cylinder of a diesel engine can be caused by()

A. a leaking fuel injector nozzle
B. a clogged air filter
C. excessively early fuel injection
D. malfunctioning valve

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品牌潜质

简述行政决策者素质的重要性。

人眼感觉到的光称为可见光,其波长范围为:()

A. 400~780nm
B. 200~400nm
C. 200~600nm
D. 400~780um
E. 200~400um

()及()均属易燃易爆物,巡检应特别注意泄漏,注意防火防爆。

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