Youare1of75consultantsemployedbyanITservicescompanynamedContoso.com.Aspartofyourjob，youandotherteammembersprovidenetworksupportforover150businessesinyourcity.
Yourcompanyisabouttoimplementabusinessprocessinwhichconsultantsmustconnecttoan applicationserverontheContoso.comnetworkwhileworkingatcustomerpremises.Whenconnectedtotheapplicationserver，consultantsprovidecriticalinformationabouteachassignmentinthefield.ToconnecttotheContoso.comapplicationserver，consultantsareexpectedtouseRemoteDesktopConnectiononcustomercomputersrunningWindowsXPorWindowsVista.Youhavebeenaskedtodeterminewhetheryourcompanyneedstopurchaseclientaccesslicenses（CALs）forTerminalServices.
Whichofthefollowingoptionsbestsuitstheneedsofyourorganization？（）

A.杀毒前应对重要数据备份
B.杀毒前应及时打补丁
C.杀毒后的u盘要及时封写
D.要及时更新杀毒软件的病毒库

A.Arotatingitemisanindividualitemthatisdefinedwithacommonitemnumber.Anitemisdesignatedasrotatingbecauseonewantstobeabletocreateindividualassetrecordsbyusingtheinformation(Classification,Specification,andItemAssemblyStructure)containedontheitemrecord.
B.Arotatingitemisasetofitemsthataredefinedwithaspecificcode.Anitemisdesignatedasrotatingbecauseonedoesnotwanttobeabletocreateindividualassetrecordsbyusingtheinformation(Classification,Specification,andItemAssemblyStructure)containedontheitemrecord.
C.ArotatingitemisasetofkitsthataredefinedwithaspecificdescriptionandGL.Anitemisdesignatedasrotatingbecauseonehasthesinglecosttomanagepreferstobeabletocreateindividualassetrecordsbyusingtheinformation(Classification,Specification,andItemAssemblyStructure)containedontheassemblyrecord.
D.Arotatingitemisanindividualitemthatisdefinedwithacommonitemnumberandcanbeasparepart.Anitemisdesignatedasrotatingbecauseonewantstobeabletocreatemultipleassetrecordsbyusingtheinformation(Classification,Specification,andItemAssemblyStructure)containedontheitemsetrecords.