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摘要： #include <iostream>using namespace std;template <class T> class B { public: void show(T a); };template <class T> void B<T>::show(T a) { cout<<a<<endl; }template <class T1,class T2> class A:public B<T2> { public: void Test(T1 a,T2 b); };template <cla 阅读全文