单项选择题
A.filter to remove the fuel oil
B.use the settler to remove the fuel oil
C.remove the fuel oil by centrifuging
D.drain and then renew the lube oil supply
单项选择题 The most important factor in engine performance is the actual power output at the end of the crankshaft available for doing workThis is known as （）.
单项选择题 How many power strokes per crankshaft revolution are there in an eight cylinder, two stroke/cycle diesel engine?（）
单项选择题 The highest pressure in a diesel engine cylinder normally occurs （）.