下载APP
【单选题】
斜齿轮的当量齿轮的齿形为（ ）
A.
斜齿轮的法面齿形
B.
斜齿轮的轴向齿形
C.
斜齿轮的端面齿形
D.
既非法面齿形，也非端面齿形
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.