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【判断题】

齿轮的基因内没有渐开线 。( )

A.
正确
B.
错误
举报
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.

【单选题】齿轮渐开线的形状取决于()。

A.
压力角的大小
B.
分度圆半径的大小
C.
基圆半径的大小
D.
齿顶圆半径的大小

【单选题】渐开线的形状取决于 。

A.
基圆半径
B.
压力角的大小
C.
发生线的位置
D.
渐开线自身