• 2022-06-07
    Are the notions of entity class and persistent class the same?
    A: 正确
    B: 错误
  • B

    内容

    • 0

      Bar service is offered to both first class and economy class passengers for free. A: 正确 B: 错误

    • 1

      ‍下列( )类声明是错误的。​ A: class A B: public class A C: abstract class A D: protected class A

    • 2

      在下面的类声明中,错误的是 A: class AA{ BB b; }; class BB{ AA a; }; B: class AA{ AA *a; }; class BB{ BB &b; }; C: class BB; class AA{ BB *b; }; class BB{ AA a; }; D: class AA; class BB{ AA &a; }; class AA{ BB b; };

    • 3

      下列哪个类声明是错误的? A: class A B: public class A C: final class A D: private class A

    • 4

      下列哪些类声明是错误的? ( ) A: class A B: public class A C: protected class A D: abstracted class A