题目内容

对铁路运输系统的研究，一般可分为三个层次，即全国铁路网及区域路网，铁路运输通道及铁路方向（铁路线），以及（）

A. 客货周转量
B. 铁路技术设备
C. 铁路经济效益
D. 铁路社会效益

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更多问题

You have a database availability group （DAG） that contains two servers named MBX1 and MBX2.You discover that a mailbox database named DB2 is in a FailedAndSuspended state on MBX2.You need to reseed DB2 to MBX2.You must achieve this goal by using the minimum amount of administrative effort.What should you do？（）

A. From the Services console， restart the Microsoft Exchange Replication Service.
B. From the Exchange Management Console， run the Add Mailbox Database Copy wizard.
C. From the Exchange Management Shell， run the Update-MailboxDatabaseCopy cmdlet.
D. From the Exchange Management Shell， run the Restore-DatabaseAvailabilityGroup cmdlet.

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