A six-cylinder, two-stroke/cycle diesel engine is fitted with a rotary distributing air starting systemThe speed of the rotating distributor disc is （）<br>A:one-half engine speed<br>B:the same as engine speed<br>C:twice engine speed<br>D:four times engine speed

A six-cylinder, two-stroke/cycle diesel engine is fitted with a rotary distributing air starting systemThe speed of the rotating distributor disc is （）
A:one-half engine speed
B:the same as engine speed
C:twice engine speed
D:four times engine speed

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