以下程序的输出结果：（ ） A: <;class 'dict'>;<;class 'dict_values'>;<;class 'dict_keys'>; B: <;class 'dict'>; C: <;class 'dict'>;<;class 'dict'>;<;class 'dict'>; D: <;class 'dict'>;NoneNone

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; };

There are different classes in the cabin, economy class, first class and ( ) . A: business class B: VIP class C: special class D: normal class

Which class will Bruce take? A: First class B: Business class C: Economy class

下面代码的输出结果是（）。 >;>;>; s = {} >;>;>; type(s) >;>;>; s = &#91;&#93; >;>;>; type(s) >;>;>; s = () >;>;>; type(s) A: <;class 'tuple'>; <;class 'list'>; <;class 'dict'>; B: <;class 'dict'>; <;class 'list'>;<;class 'tuple'>; C: <;class 'dict'>;<;class 'list'>;<;class 'set'>; D: lt;class 'tuple'>;<;class 'dict'>;<;class 'list'>;

He is a student of ____. A: Class Second B: the Class Two C: Class Two D: Second Class

如何表示CSS的类选择器 A: B: class C: .class D: class E: [class]

如果有，指出下面类模板声明（或声明对）中哪些是非法的。（a）template <class Type> class C1；template <class Type，int size> class C1；（b）template <class T，U，class V> class C2；（c）template <class C1，typename C2>class C3（}；（d）template <typename myT，class myr> class C4{}；（e）template <class Type，int*ptr> class C5；template <class T，int*pi>class C5；

The new student is in _______ , Grade Two. A: Class Third B: Third Class C: Class Three D: Three Class

Which of the following classes cannot be extended?(). A: class A { } B: class A { private A();} C: final class A { } D: class A { protected A();}