下载APP
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.
相关题目：
【判断题】“127”型货车代表十根轴的货车，总轴限为41吨。
A.
正确
B.
错误
【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
【判断题】m,α,ħa*,c*都是标准的齿轮是标准齿轮。
A.
正确
B.
错误
【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
【判断题】单斜晶系是光性方位是光率体的Nm轴与a、b、c轴之一平行，其余两根轴斜交。
A.
正确
B.
错误
【单选题】齿轮的渐开线形状取决于它的（）直径。
A.
齿顶圆
B.
分度圆
C.
基圆
D.
齿根圆
【判断题】自动变速器中的齿轮都是行星齿轮。()
A.
正确
B.
错误
【单选题】汽车变速箱齿轮是?
A.
动力装置
B.
传动装置
C.
执行装置
D.
控制装置
【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
【单选题】在 Tekla软件中,增加单根轴线时,应调用( )命令。
A.
直线轴网
B.
弧线轴网
C.
增加轴线
D.
创建轴线
【判断题】动装置中的倍增变速机构是由4根轴组成的。
A.
正确
B.
错误
【判断题】单斜晶系是光性方位是光率体的Nm轴与a、b、c轴之一平行,其余两根轴斜交。
A.
正确
B.
错误