Contact lenses belong to Class-III medical devices of medical devices in medicine.

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

【单选题】比较苯酚 (I) 、环己醇 (II) 、碳酸 (III) 酸性的大小 : A. II>I>III B.III>I>II C. I>II>III D. II>III>I A. II>I>III B. III>I>II C. I>II>III D. II>III>I

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

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；

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

26o.5、45o;II、45o、90o;III、22o.5、45o A: I、II B: I、III C: II、III D: I、II、III

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; };

Class A has a higher enrollment than Class B. Class C has a lower enrollment than Class B. Therefore, Class A has a lower enrollment than Class C.