WCF中ServiceHost能不能host多个服务？

现在我有两个Service类：
UserService
DictionaryService

配置文件是：

   < system .serviceModel >
     < services >
       < service  name ="DictionaryServer.Dal.UserService" >
         < endpoint  address ="net.tcp://localhost:8001/UserService"
                   binding ="netTcpBinding"
           contract ="Common.Interface.IUserService"   >
         </ endpoint >
       </ service >
       < service  name ="DictionaryServer.Dal.DictionaryService" >
         < endpoint  address ="net.tcp://localhost:8001/DictionaryService"
                   binding ="netTcpBinding"
           contract ="Common.Interface.IDictionaryService"   >
         </ endpoint >
       </ service >
     </ services >
   </ system.serviceModel >

以下是我目前的解决方案：

     class  Program
     {
        static void Main(string[] args)
        {
            ServiceHost host1 = new ServiceHost(typeof(UserService));
            ServiceHost host2 = new ServiceHost(typeof(DictionaryService));
            host1.Open();
            host2.Open();
            Console.WriteLine("The service is ready.");
            Console.ReadLine();
            host1.Close();
            host2.Close();
        }
    }

我的问题就是能不能只用一个ServiceHost实例，来加载两个服务类？
要是用我现在这样的实现方案的话，有许多服务类的话，岂不是打开好多个ServiceHost?