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[单选] 现有: interface Animal { void eat(); } //insert code here public class HouseCat extends Feline { public void eat(){ } } 和五个申明 abstract class Feline implements Animal { } abstract class Feline implements Animal { void eat(); } abstract class Feline implements Animal { public void eat();} abstract class Feline implements Animal { public void eat(){} } abstract class Feline implements Animal { abstract public void eat();} 结果为:()
A.1 B.2 C.3 D.4
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