在出口业务中，国外客户往往要我国出口商提供GSPFormA产地证。在我国这种证书的签发机构是（）。 商会。 行业公会。 贸促会。 出入境检验检疫局。
法律法规对建立完善企业隐患排查治理责任制有什么规定？
A Windows Communication Foundation (WCF) service has a callback contract. You are developing a client application that will call this service.You must ensure that the client application can interact with the WCF service. What should you do?（） On the OperationContractAttribute, set the AsyncPattern property value to true.。 On the OperationContractAttribute, set the ReplyAction property value to the endpoint address of the client.。 On the client, create a proxy derived from DuplexClientBase<TChannel >.。 On the client, use GetCallbackChannel<T >.。
Your network consists of a single Active Directory domain. All domain controllers run Windows Server 2008 R2. All client computers run Windows 7. All user accounts are stored in an organizational unit （OU） named Staff. All client computer accounts are stored in an OU named Clients. You plan to deploy a new application. You need to ensure that the application deployment meets the following requirements： èUsers must access the application from an icon on the Start menu. èThe application must be available to remote users when they are offline. What should you do？（） Publish the application to users in the Staff OU.。 Publish the application to users in the Clients OU.。 Assign the application to computers in the Staff OU.。 Assign the application to computers in the Clients OU.。
计算机病毒有哪些类型？
Your company has a main office and a branch office. Users in the branch office report that they are unable o access shared resources in the main office. You discover that computers in the branch office have IP addresses in the range of 169.254.x.x you need to ensure that computers can connect to shared resources in both the main office and the branch office. What should you do？（）
