单项选择题
On a turbo-charged, medium-speed diesel engine, which of the following problems is an indication of a restricted air intake passage?（）
A.Engine is hard to start B.Engine misses C.Surges at governed RPM D.Coolant temperature is too low
单项选择题 The jacket water temperature in a diesel engine closed freshwater cooling system is normally controlled by （）
单项选择题 For diesel engine piston cooling, lubricating oil can be supplied to the pistons by a/an （）.
单项选择题 In a four-stroke/cycle diesel engine, the camshaft rotates at （）
