电路交换方式中不需要在两个通信节点之间建立通路。
工艺创新大多属于（）创新。
A Windows Communication Foundation (WCF) solution uses the following contracts. (Line numbers are included for reference only.) 01 [ServiceContract(CallbackContract=typeof(INameService))] 02 public interface IGreetingService 03 { 04 [OperationContract] 05 string GetMessage(); 06 } 07 [ServiceContract] 08 public interface INameService 09 { 10 [OperationContract] 11 string GetName(); 12 } The code that implements the IGreetingService interface is as follows: 20 public class GreetingService : IGreetingService 21{ 22 public string GetMessage() 23 { 24 INameService clientChannel = OperationContext.Current.GetCallbackChannel(); 25 string clientName = clientChannel.GetName(); 26 return String.Format("Hello {0}", clientName); 27 } 28 } The service is self-hosted. The hosting code is as follows: 30 ServiceHost host = new ServiceHost(typeof(GreetingService)); 31 NetTcpBinding binding = new NetTcpBinding(SecurityMode.None); 32 host.AddServiceEndpoint("MyApplication.IGreetingService", binding, "net.tcp//localhost:12345"); 33 host.Open(); The code that implements the lNameService interface is as follows: 40 class NameService : INameService 41 { 42 string name; 43 public NameService(string name) 44 { 45 this.name = name; 46 } 47 public string GetName() 48 { 49 return name; 50 } 51 } Currently, this code fails at runtime, and an InvalidOperationException is thrown at line 25. You need to correct the code so that the call from the service back to the client completes successfully. What are two possible ways to achieve this goal? (Each correct answer presents a complete solution. Choose two.)（）
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腓尼基字母
关于金融，以下说法为错误的是（）。 金融的基本功能是创造货币。 金融即资本的融通。 金融即货币的融通。 金融的基本功能是积累资本。
根据我国现行工程造价构成，属于固定资产投资中积极部分的是（）。
