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)（）。

[单选题]（）上方的接触网设备未停电并办理安全防护措施前，禁止任何人员攀登到车顶或车辆装载的货物上。

[单选题]使血钙浓度降低的激素（　　）。

[单选题]一般来说，在买卖合同中，标的物损毁、灭失的风险自（）起转移给买受人。

[单选题]ROC确定的临界值，它反映了（）

[填空题]根据该职位的工作目标和工作职责，组织赋予该职位的权限范围、层级与控制力度称为（）。

[单选题]指导教师进行辅导要强化责任意识，学员的每一步，都十分关键，离开适当的辅导，（），养成不良的习惯，这一点一定要给教师讲清楚。

[判断题]学习和掌握教师职业道德知识是教师职业道德修养的首要环节和最初阶段。

[问答题]发电机三相电流不对称会产生什么影响？

[单选题]关于风暴顶辐散，以下描述错误的是（）。

[判断题]前置翻斗车严禁强行挂档或换挡。

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