单选题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 （）.Aindicated horsepowerBbrake horsepowerCnet horsepowerDfriction horsepower
单选题
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
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