单选题On most diesel engines, the governor controls the output speed by （）.Acontrolling the amount of fuel injected into the cylindersBvarying the speed of the turbochargerCadjusting the compression ratioDchanging the timing of the fuel injection camshaft
单选题
On most diesel engines, the governor controls the output speed by （）.
A
controlling the amount of fuel injected into the cylinders
B
varying the speed of the turbocharger
C
adjusting the compression ratio
D
changing the timing of the fuel injection camshaft
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