38.1.05A sixcylindertwostroke/cyclediesel engineis fittedwitha rotarydistributing air starting system.The speed ofthe rotating distributor disc isA the same as engine speed0300309B four times eng

【参考答案】

答案：A

解析： 旋转分配空气启动系统中，旋转分配盘的速度与发动机速度相同。