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【单选题】
下列驱动齿轮的叙述何者有误？（）。
A.
十字接头常用于传动轴，它没有等速的特性
B.
最终驱动齿轮具有改变动力传输方向及降低转速以增加扭力的功能
C.
最终齿轮比又称为总减速比
D.
一般而言，如果离合器片被磨损，离合器踏板的自由行程会减小
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Passage 3 Questions 11 to 15 are based on the following passage: Scientists in India have invented a new way to produce electricity. Their invention does not get its power from oil, coal or other fuel...
A.
Because bullocks have long been used by Indian people
B.
Because bullocks walk slowly and are easy to control.
C.
Because there are few non-working bullocks in India
D.
Because there is not enough oil in India.