单选题In a four-stroke/cycle diesel engine, the camshaft rotates at （）Atwice the crankshaft speedBhalf the crankshaft speedCthe same speed as that of the crankshaftDa speed independent of that of the crankshaft
单选题
In a four-stroke/cycle diesel engine, the camshaft rotates at （）
A
twice the crankshaft speed
B
half the crankshaft speed
C
the same speed as that of the crankshaft
D
a speed independent of that of the crankshaft
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相关考题：
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