煤气成分中属于不可燃成份的是（）。 ["一氧化碳","甲烷","氮气"]
Your company has a main office and one branch office. All servers run Windows Server 2003 Service Pack 2 （SP2）.In the main office， a server named DNS1 hosts the primary DNS zone for contoso.com.You configure a primary zone for west.contoso.com on a DNS server named DNS2 in the branch office. All servers in the branch office are configured to have the west.contoso.com DNS suffix.You need to ensure that users in the main office can resolve server names in the branch office. The solution must meet the following requirements： （1）Minimize the amount of DNS zone transfer traffic between the offices. （2）Maintain the current name resolution process for users in the main office. What should you configure on DNS1？（） ["a host record for DNS2","a secondary zone for the west.contoso.com zone","a stub zone for the west.contoso.com zone","DNS2 as a forwarder"]
SQL Server支持两种形式的变量，即（）和（）。
You use Microsoft .NET Framework 4 to create a Windows application. You plan to deploy the application by using Trusted Application Deployment. The application can only be installed by users who have elevated permissions. You need to ensure that users are not prompted for additional permissions when they install the application. Which two actions should you perform? （） [" Obfuscate the assemblies."," Configure the application as online only."," Enable User Account Control (UAC) on all client computers."," Sign the deployment manifest with the publisher's digital certificate."," Add the publisher of application to the trusted publisher's store on all client computers."]
工程质量监督机构受政府委托实施质量监督，其本质是属于（） ["独立企业","行政执法机构","营利机构","中介机构"]
触发器是一种特殊的（），基于表而创建，主要用来保证数据的完整性。
