在DNA分子中，与酶的生物合成有密切关系的基因有4种
A Windows Communication Foundation (WCF) solution uses the following contract: [ServiceContract(SessionMode=SessionMode.Allowed)]public interface IMyService{ [OperationContract(IsTerminating=false)] void Initialize(); [OperationContract(IsInitiating=false)] void DoSomething(); [OperationContract(IsTerminating=true)] void Terminate();} You need to change this interface so that: lnitialize is allowed to be called at any time before Terminate is called. DoSomething is allowed to be called only after Initialize is called, and not allowed to be called after Terminate is called. Terminate will be allowed to be called only after Initalize is called.Which two actions should you perform? (Each correct answer presents part of the sdution. Choose two)（）。 [" Change the ServiceContract attribute of the IMyService interface to the following. [ServiceContract(SessionMode=SessionMode.Required)]"," Change the ServiceContract attrbute of the IMyService interface to the following [ServiceContract(SessionMode=SessionMode.Allowed)]"," Change the OperationContract attribute of the Initialize operation to the following. [OperationContract(IsInitiating = true, IsTerminating = false)]"," Change the OperationContract attribute of the Terminate operation to the following [OperationContract(IsInitiating = false, IsTerminating = true)]"]
病理性幻觉
线性结构应满足的两个条件是什么？
一夫一妻制
霉菌污染饲料的危害主要有？
