单项选择题 An acceptable means of tightening connecting rod and main bearing cap bolts is to measure the （） Ⅰ.torque applied to each nut and bolt assembly Ⅱstretch of each nut before and after tightening

单项选择题 Forcing the exhaust gases form the cylinder of an operating diesel engine with the aid of a blower is known as （）

单项选择题 In a four-stroke/cycle diesel engine, badly worn intake valve guides can cause excessive（）.