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 （）.
A.indicated horsepower B.brake horsepower C.net horsepower D.friction horsepower
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 （）.
单项选择题 What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）
