单项选择题
A.Loss of compression for that cylinder
B.Misfiring or rough running
C.Damage to the valve
D.All of the above
单项选择题 Which of the following conditions will develop if the flow of ‘raw’ cooling water to diesel engine is obstructed?（）
单项选择题 Aburned exhaust valve may be detected by a higher than normal （）
单项选择题 In a diesel engine, excessive cylinder liner wear will cause （） Ⅰ.increased blow-by Ⅱ.wear between the piston ring and groove