下载APP
【单选题】
对于单个齿轮 , 控制齿轮副侧隙的指标是( )。
A.
中心距偏差
B.
齿廓总偏差
C.
齿厚偏差或公法线平均长度偏差
D.
螺旋线总偏差
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.