Circle((0,0),1)表示单位圆

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

1 Change have to the correct form of hav...es. ________________

1 Write down the past form of the verbs

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 ();

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)

Along an involute gear profile, the pressure angle on ___ equals to zero. A: Base circle B: Pitch circle C: Reference circle D: Dedendum circle

执行语句“Circle (1000, 1000), 500, 8, -1, -3” 时，将绘制