Along an involute gear profile, the pressure angle on ___ equals to zero.
A: Base circle
B: Pitch circle
C: Reference circle
D: Dedendum circle
A: Base circle
B: Pitch circle
C: Reference circle
D: Dedendum circle
举一反三
- 定义一个包含3个元素的类Circle的对象数组x，下列哪种写法是错误的？（ ） A: Circle x[ ] = new Circle[3]; B: Circle [ ]x = new Circle[3]; C: Circle x[3] = new Cirlce( ); D: Circle x[ ] = { new Circle(), new Circle(), new Circle() };
- 假设类Circle只定义了一个"Circle(int x){......}"形式的构造方法，则下列新建对象语句中错误的是（ ）。 A: Circle obj = new Circle(10); B: Circle obj; obj = new Circle(10); C: Circle obj = new Circle(); D: Circle obj = new Circle(10/3);
- Which circle does Korean English belong to? A: Inner Circle B: Outer Circle C: Expanding Circle D: None of the Circles
- 使用turtle的circle函数，画半径100像素的半圆，以下正确的是 A: circle(100,180) B: circle(180,100) C: circle(100) D: circle(180)
- 设Circle为已定义的类名，下列声明A类的对象c1的语句中正确的是（ ）。 A: float Circle c1; B: public Circle c1=Circle (); C: Circle c1=new int(); D: Circle c1=new Circle ();