[单选] 将前景色和背景色恢复为默认颜色的快捷键是（）？

You are responsible for implementing maintenance jobs on a SQL Server 2005 database server. Certain jobs run every Sunday and other jobs run at the beginning of every month. You need to schedule the jobs in the way that uses the least amount of administrative effort. What should you do？（） Create a job schedule that runs every Sunday.Assign weekly tasks to this schedule.Create a second schedule that runs on the first day of every month. Assign monthly tasks to this schedule.。 Create a job for each task that runs once a day. Use a Transact-SQL statement to check the date and day of the week. If the day is either a Sunday or the first day of the month， execute the code.。 Create a job schedule that runs once a day. Assign jobs to this job schedule. If the day is either a Sunday or the first day of the month， execute the jobs.。 Create a job for each task that runs once a week on Sunday. Add a second job schedule that runs the job on the first of the month。 出口商审核信用证的依据是（）。 合同及《UCP600》的规定。 一整套单据。 开证申请书。 商业发票。 You are the network administrator for your company. The network consists of a single Active   Directory forest. The forest consists of 19 Active Directory domains. Fifteen of the domains contain  Windows Server 2003 domain controllers. The functional level of all the domains is Windows 2000 native.  The network also consists of a single Microsoft Exchange 2000 Server organization. You need to create  groups that can be used only to send e-mail messages to user accounts throughout the company. You  want to achieve this goal by using the minimum amount of replication traffic and minimizing the size of the  Active Directory database. You need to create a plan for creating e-mail groups for your company.  What should you do？（）  Create global distribution groups in each domain. Make the appropriate users from each domain members of the global distribution group in the same domain. Create universal distribution groups. Make the global distribution groups in each domain members of the universal distribution groups.。  Create global security groups in each domain. Make the appropriate users from each domain members of the security group in the same domain. Create universal security groups. Make the global security groups in each domain members of the universal security groups.。  Create universal distribution groups. Make the appropriate users from each domain members of a universal distribution group.。  Create universal security groups. Make the appropriate users from each domain members of a universal security group.。 Your company has 10 servers that run Windows Server 2008 R2. The servers have Remote Desktop Protocol (RDP) enabled for server administration. RDP is configured to use default security settings. All administrators' computers run Windows 7. You need to ensure the RDP connections are as secure as possible. Which two actions should you perform？（） Set the security layer for each server to the RDP Security Layer.。 Configure the firewall on each server to block port 3389.。 Acquire user certificates from the internal certification authority.。 Configure each server to allow connections only to Remote Desktop client computers that use Network Level Authentication.。 发生劳动争议必须经过（），才可向人民法院提起诉讼。 调解。 协商。 仲裁。 行政复议。 将前景色和背景色恢复为默认颜色的快捷键是（）？