问题详情

下面程序的结果是 #include<iostream.h> class A { public: A(){cout<<"construtA" <<endl;} virtual ~A() {cout << "destructA" <<endl;}}; class B:public A { }; class C:public A { }; class D:public B,public C { }; void main() { Dd;}


A、仅纵筋达到屈服强度

时间:2021-07-17 20:19 关键词:

答案解析

B