【简答题】下列程序片段中,能通过编译的是:A. public abstract class Animal{ public void speak();} B. public abstract class Animal{ public void speak(){}} C. public class Animal{ public abstract void speak();} D. public abstr...
【简答题】下列程序片段中,能通过编译的是:A. public abstract class Animal{ public void speak();} B. public abstract class Animal{ public void speak(){}} C. public class Animal{ public abstract void speak();} D. public abstr...