.NET(C#)でのHttpClientクラスの挙動

Program.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;

namespace HttpClientTest
{
    class Program
    {
        private static readonly HttpClient httpClient = new HttpClient();

        static void Main(string[] args)
        {

            List<Task> tasks = new List<Task>();

            for (int i = 0; i < 10; i++)
            {
                Task task = Task.Run(async () =>
                {
                    string html = await httpClient.GetStringAsync("http://www.example.com/test.html");
                });

                tasks.Add(task);
            }
            
            Task t = Task.WhenAll(tasks);
            t.Wait();

        }
    }
}