C#静态方法在多用户并发访问时，运行情况到底是什么样？是排队等待？还是并发的？

// --------------------------------------------------------------------
//  All Rights Reserved , Copyright (C) 2011 , Hairihan TECH, Ltd. 
// --------------------------------------------------------------------

namespace  DotNet.Example
{
     using  DotNet.BaseManager;

     public   class  StaticTest
    {
         ///   <summary>
         ///  定义委托
         ///   </summary>
         ///   <param name="user"> 用户 </param>
         delegate   void  MakeStaticDelegate( string  user);

         ///   <summary>
         ///  这里是测试静态方法
         ///   </summary>
         ///   <param name="user"> 用户 </param>
         private   static   void  MakeStaticTest( string  user)
        {
             for  ( int  i  =   0 ; i  <   10 ; i ++ )
            {
                 //  输出当前的变量
                System.Console.WriteLine(user  +   " ： "   +  i.ToString());
                System.Threading.Thread.Sleep( 1000 );
            }
        }

         ///   <summary>
         ///  这里是模拟多用户同时点击并发
         ///   </summary>
         public   void  DoTest()
        {
             //  模拟3个用户的并发操作
            MakeStaticDelegate makeStaticDelegate1  =   new  MakeStaticDelegate(MakeStaticTest);
            makeStaticDelegate1.BeginInvoke( " user1 " ,  null ,  null );
            MakeStaticDelegate makeStaticDelegate2  =   new  MakeStaticDelegate(MakeStaticTest);
            makeStaticDelegate2.BeginInvoke( " user2 " ,  null ,  null );
            MakeStaticDelegate makeStaticDelegate3  =   new  MakeStaticDelegate(MakeStaticTest);
            makeStaticDelegate3.BeginInvoke( " user3 " ,  null ,  null );
            System.Console.ReadLine();
        }
    }