单项选择题
Engine displacement is equal to the cylinder （）.
A.area times the stroke
B.area times the stroke, times the number of cylinders
C.volume times the stroke
D.volume times the stroke, times the number of cylinders
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A.water-tube supercritical circulation
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A.regulating the speed of the turbocharger
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B.clockwise, due to the bowl rotating counterclockwise
C.counterclockwise, due to the bowl rotating clockwise
D.counterclockwise, due to the bowl rotating counterclockwise
