【单选题】设有以下类的定义: class A { protected : int a; public : A( int i = 0) { a = i ;} int Geta() { return a; } }; class B : public A { A a1; public : —————— //B 类的构造函数的定义 void Show() { cout << a << '\t' << a1.Geta...
【单选题】If a firm spends $600 on advertising, its goal is for the demand curve for its product to shift ________ and its marginal revenue curve to shift ________.
【简答题】Case
study Consider two firms called Firm A and Firm
B, which have similar revenue and expenses. Firm A, however, makes a much
greater effort to clean up the environment; it spends $10 million, while ...
【单选题】设有以下类的定义: #include class A { protected: int a; public: A(int i=0) { a=i; } int Geta(){ return a; } }; class B: public A { A a1; Public: //B类构造函数的定义 void Show() {cout< }; 则关于B类构造函数,下列定义形式一定不正...