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下列类定义中属于合法的抽象类的定义的是()
A.abstract Animal{abstract void growl()}
B.class abstract Animal{abstract void growl()}
C.abstract class Animal{abstract void growl()}
D.abstract class Animal{ abstract void growl(){System.out.println("growl")};}
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A.abstract Animal{abstract void growl()}
B.class abstract Animal{abstract void growl()}
C.abstract class Animal{abstract void growl()}
D.abstract class Animal{ abstract void growl(){System.out.println("growl")};}
第1题
{
abstract public void Move();
}
B.abstract class Cat: Animal
{
virtual public void Move(){Console.Write(Console.Write("Move!");)}
}
C.abstract class Cat: Animal
{
public void Move(){Console.Write(Console.Write("Move!");)};
}
D.abstract class Cat: Animal
{
public void Eat(){Console.Write(Console.Write("Eat!");)};
}
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