单项选择题
The ignition quality of diesel fuel is indicated by its（）
A.octane number B.cetane number C.viscosity in Saybolt seconds D.air fuel ratio
单项选择题 Which of the following conditions may be attributed to a fouled turbocharger compressor inlet screen or filter?（）
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（）
