单项选择题
Which of the following conditions may be attributed to a fouled turbocharger compressor inlet screen or filter?（）
A.Decreasing scavenge air pressure B.Increasing exhaust temperatures before the turbine C.Reduction in engine speed D.All of the above
单项选择题 The rate of wear on a cylinder liner depends on the （）
单项选择题 In diesel engineering practice, the term used to express the ignition quality of a particular fuel is（）
单项选择题 The cetane number rates fuels for diesel engines according to its （）
