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套管内的上胶塞起什么作用？固井施工中何时把它顶入套管内？

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世界上所有蜜蜂的蜂窝都是正（）边形。

Your network includes the following elements： - VMware ESX 3.5 servers - Windows Server 2008 R2 Hyper-V servers - Microsoft System Center Virtual Machine Manager （VMM） 2008 R2 with the Subsystem for UNIX-based Applications feature installed. You run several ESX-hosted virtual machines （VMs） from an NFS share， and you run several Hyper-V VMs from a Windows file share. You need to migrate the ESX-hosted VMs to Hyper-V. Which two actions should you perform？（）

A. Run the lMew-V2V PowerShell cmdlet and point to the .vmx files
B. Copy the .vmx and .vmdk files to the VMM library
C. Shut down the VMs
D. Copy the .vmx and .vmdk files from the NFS share to the Windows file share

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数字蜂窝移动通信网工程验收规范》，铁塔防雷保护接地电阻阻值应小于1Ω.

A. 正确
B. 错误

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You are the network administrator for TestKing.com. All user accounts and groups in the domain are in the container named Users. Company naming conventions require that names of global groups begin with G_ and names of domain local groups begin with DL_. A domain local group named HRServices does not meet the requirements. The HRServices group has one global group member named G_HRUsers. The HRServices group is assigned to Allow - Full Control permission for a shared folder named HRFiles. The shard folder is located on a file server. You need to rename the HRServices group to meet the naming convention requirements. In addition, you need to ensure that user access to the HRFiles shared folder is not disrupted while you perform the procedure. What are two possible ways to achieve this goal? （）(Each correct answer presents a cplete solution. Choose two.)

A. Open Active Directory Users and Computers, and then delete the existing HRServices domain local group. Create a new domain local group named DL_HRServices. Add the G_HRUsers group to the DL_HRServices group. Assign the DL_HRServices group the Allow - Full Control permission for the HRFiles shared folder.
B. Open the Active Directory Users and Computers, and then change the name of the HRservices group to DL_HRServices.
C. Run the following command: dsadd group CN=DL_HRServices,CN=Users,DC=testking.com,DC=com - member CN=G_HRUsers,CN=Users,DC=testking,DC=com
D. Run the following command: dsmove CN=HRServices,CN=Users,DC=testking,DC=com -newname DL_HRService

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