质反应
下列计量单位中（）不是工程量清单计量的基本单位。 ["英寸","m2\/sup>","m3\/sup>","块<\/sup><\/sup>"]
You plan to deploy Exchange Server 2010 on a new server.The server will be a member of a database availability group.You need to identify the operating system that can be installed on the server to support Exchange Server 2010.Your solution must minimize costs. Which operating system should you identify？（） ["Windows Server 2003 R2 Standard Edition","Windows Server 2008 R2 Standard Edition","Windows Server 2003 Service Pack 2 （SP2） Enterprise Edition","Windows Server 2008 Service Pack 2 （SP2） Enterprise Editio"]
You are planning to deploy two Windows Server 2008 R2 Hyper-V servers. You need to design the storage of VHD files for maximum security. What should you do？（） ["Store the VHD files on a dedicated NTFS volume","Store unencrypted VHD files on a volume that uses Windows BitLocker drive encryption","Encrypt the VHD files by using EFS on a volume that uses Windows BitLocker drive encryption","Encrypt the VHD files by using EFS on a volume that does not use Windows BitLocker drive encryptio"]
后遗效应
设一个关系A具有a1个属性和a2个元组，关系B具有b1个属性和b2个元组，则关系A×B具有（）个属性和（）个元组。
