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【单选题】

斜齿轮螺旋角相等旋向()

A.
相同
B.
相反
C.
相对
D.
都不对
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】标准立铣刀(粗齿)的螺旋角β为()。

A.
15°~25°
B.
30°~35°
C.
40°~45°
D.
50°~55°

【单选题】用盘形齿轮铣刀加工斜齿轮时,在选择铣刀时()。

A.
铣刀模数应为被切齿轮的端面模数,铣刀的号数应按齿轮的齿数选取
B.
铣刀的模数应为被切齿轮的法向模数Mn铣刀号数应按假想齿轮的齿数Z’选取
C.
按比例选取
D.
截形为直线型

【多选题】开式齿轮的主要失效形式是__。

A.
轮齿折断
B.
齿面磨损
C.
齿面胶合
D.
齿面点蚀
相关题目:
【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】齿轮的润滑主要靠()
A.
边界油膜
B.
刚性油膜
C.
弹性油膜
【单选题】蜗轮的螺旋角与蜗杆导程角 。
A.
无关系
B.
之和为90º
C.
不相等
D.
相等
【单选题】标准立铣刀(粗齿)的螺旋角β为()。
A.
15°~25°
B.
30°~35°
C.
40°~45°
D.
50°~55°
【单选题】用盘形齿轮铣刀加工斜齿轮时,在选择铣刀时()。
A.
铣刀模数应为被切齿轮的端面模数,铣刀的号数应按齿轮的齿数选取
B.
铣刀的模数应为被切齿轮的法向模数Mn铣刀号数应按假想齿轮的齿数Z’选取
C.
按比例选取
D.
截形为直线型
【多选题】开式齿轮的主要失效形式是__。
A.
轮齿折断
B.
齿面磨损
C.
齿面胶合
D.
齿面点蚀
【单选题】只要()的齿轮就能互相啮合。
A.
齿数和模数相同
B.
模数和压力角相同