某企业2008年度发生以下业务：以银行存款购买将于2个月后到期的国债500万元，偿还应付账款200万元，支付生产人员工资150万元，购买固定300万元。假定不考虑其他因素，该企业2008年度现金流量表中“购买商品、接受劳务支付的现金”项目的金额为（）万元
婴儿皮肤干燥、角膜溃疡、夜盲畏光是缺乏（）导致的。 维生素A。 维生素D。 叶酸。 维生素E。
Your network contains one Active Directory domainl. You have a member server that runs Windows Server 2008. You need to immediately disable all incoming connections to the server. What should you do？（） From the Services snap-in disable the IP Helpder。 Fom the Services snap-in disable the Net Logon Service。 From Windows Firewall， enable the Block all connections option on the Public Profile。 From the Windows Firewall， enable the Block all connections option on the Domain Profile。
You are developing a client application that consumes a Windows Communication Foundation (WCF) service. You use the svcutil.exe utility to create a proxy for the service. You use the svcutil.exe switches that generate asynchronous calls. GetFlight is a service operation that takes no parameters and returns a string. The GetFlightCallback method must be called when the service operation returns.You create an instance of the client proxy with the following code:var client = new TranvelServiceClient();You need to ensure that a callback is received when the GetFlight operation is called asynchronously. Which code segment should you use?（） client.BeginGetFlight(GetFlightCallback, null); client.GetFlight();。 client.GetFlight(); client.BeginGetFlight(GetFlightCallback, null);。 client.GetFlightCompleted += new EventHandler(GetFlightCallback); client.GetFlightAsync();。 IAsyncResult asyncResult = client.BeginGetFlight(GetFlightCallback, client); client.EndGetFlight(asyncResult); 。
冷锋
下列不属于CASE平台上的信息系统开发工具的是（）
