【单选题】【消耗次数:1】
轮系的传动比,是指轮系中首轮与末轮的()或()之比。
A.传动角、压力角
B.中心距、位移
C.加速度、位移
D.角速度、转速
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【判断题】 轮系的传动比等于首轮与末轮的转速或角速度之比。
①  正确
②  错误
【多选题】 轮系的传动比,是指轮系中首轮与末轮的()或()之比。
①  A.线速度
②  B.角速度
③  C.转速
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【判断题】 轮系的传动比等于末轮齿数与首轮齿数之比。
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【判断题】 轮系中惰轮不仅改变传动比的大小而且还影响传动方向。
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【单选题】 定轴轮系的传动比大小与轮系中的惰轮的齿数____。
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【判断题】 轮系传动不可获得很大的传动比。
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