02 2014 档案
摘要：1 using System; 2 using System.Collections.Generic; 3 using System.Linq; using System.Text; 4 5 namespace ConsoleApplication1 { 6 7 class Program { 8 9 static void Main(string[] args) {10 11 List list = new List(); 12 list.Add(new Customer()); 13 list.Add(new VIPACustomer()); 14 list.Add(n...
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