参考答案和解析
参考答案:正确
更多“the prime minister and cabinet decide on the general direction of britain’s foreign po ”相关问题
  • 第1题:

    YouworkinaOrganizationwhichisnamedWiikigoCorp.TheOrganizationusesSQLServer2008.YouaretheadministratoroftheOrganizationdatabase.NowyouareinchargeofaSQLServer2008instance.Lookatthefollowingquery:SELECTs.*,i.*FROMSensitiveTblASsINNERJOINInsensitiveTblASiONi.OrganizationName=s.OrganizationNameYouusetheabovequerytojointwotablesonacolumnnamedOrganizationName.Thefollowingerrorisreturnedwhenyouexecutethequery."Msg468,Level16,State9,Line17Cannotresolvethecollationconflictbetween'SQL_Latin1_General_CP1_CS_AS'and'SQL_Latin1_General_CP1_CI_AS'intheequaltooperation."TheONclauseofthequeryhastobemodifiedsothatitcanperformacase-sensitivejoinsuccessfully.Whatshouldyoudo?()


    参考答案:C

  • 第2题:

    You are the administrator of several SQL Server 2000 computers. You want to retrieve information from an archived inventory database. You have a full tape backup of the database. The backup’s header information shows that the backup uses the SQL_Latin1_General_CR437_BIN collation.

    However, the existing SQL server computers in your office are configured to use the

    SQL_Latin1_General_CP1_CI_AS collation.

    You do not want to join tables in the inventory database with tables in other databases. You need to restore the inventory database to a SQL Server 2000 computer by using the least amount of administrative effort.

    What should you do?

    A.Use the rebuildm utility to rebuild the system database on an existing SQL server computer. Configure all the databases on that server to use the SQL_Latin1_General_CR437_BIN collation. Restore the inventory database to the server.

    B.Restore the inventory database to an existing SQL server computer. Accept the SQL_Latin1_General_CR437_BIN collation for that database.

    C.Install a new named instance of SQL Server 2000 on an existing SQL Server 2000 computer. Configure the named instance to use the SQL_Latin1_General_CR437_BIN collation. Restore the inventory database to the named instance.

    D.Install SQL Server 2000 on a new computer. Configure the new server to use the SQL_Latin1_General_CR437_BIN collation. Restore the inventory database to the new server.


    正确答案:B
    解析:Explanation:CollationscontrolthephysicalstorageofcharacterstringsinSQLServer2000byspecifyingthebitpatternsthatrepresenteachcharacterandtherulesbywhichcharactersaresortedandcompared.WhereasearlierversionsofSQLServersupportedonlyonecollationforeachinstanceofSQLServer,SQLServer2000allowsobjectsthathavedifferentcollationstobestoredinasingledatabase.WecanthusrestorethedatabasetoanexistingSQLServer2000computerwithouthavingtochangethecollationofthatdatabase.IncorrectAnswers:A:TherebuildmutilityrebuildsthemasterdatabaseandcanbeusedtochangethecollationsettingsofaninstanceofSQLServer2000,ortofixacorruptedmasterdatabase.Rebuildingthemasterdatabaseinvolvesremovesalldatabaseobjectsanddata,re-createthedatabaseobjectsandreloadthedata,orreattachthedataandlogfilesusingsp_attach_dbwhentherebuildiscomplete.C:CollationscontrolthephysicalstorageofcharacterstringsinSQLServer2000byspecifyingthebitpatternsthatrepresenteachcharacterandtherulesbywhichcharactersaresortedandcompared.WhereasearlierversionsofSQLServersupportedonlyonecollationforeachinstanceofSQLServer,SQLServer2000allowsobjectsthathavedifferentcollationstobestoredinasingledatabase.ItisthusnotnecessarytoinstallanewinstanceofSQLServer2000inordertorestorethedata.WecaninsteadrestorethedatabasetoanexistingSQLServer2000computerwithouthavingtochangethecollationofthatdatabase.D:CollationscontrolthephysicalstorageofcharacterstringsinSQLServer2000byspecifyingthebitpatternsthatrepresenteachcharacterandtherulesbywhichcharactersaresortedandcompared.WhereasearlierversionsofSQLServersupportedonlyonecollationforeachinstanceofSQLServer,SQLServer2000allowsobjectsthathavedifferentcollationstobestoredinasingledatabase.ItisthusnotnecessarytoinstallanewinstanceofSQLServer2000onanewcomputerinordertorestorethedata.WecaninsteadrestorethedatabasetoanexistingSQLServer2000computerwithouthavingtochangethecollationofthatdatabase.

  • 第3题:

    安全阀在线测试技术的设计依据和原理所依据的理论公式是?PS-整定压力、PO-工作压力、△F-提升力、S-介质作用在阀瓣上的有效面积。()

    APS=PO+△F/S

    BPS=△F/S

    CPS=PO/S

    DPS=△F+PO/S


    A

  • 第4题:

    It’s difficult for me to _________ between the two books.

    A.carry

    B.make

    C.take

    D.decide


    答案:D

  • 第5题:

    Before making an important __________(decide), think it over.


    正确答案:
    decision

  • 第6题:

    反应Ca3(PO4)2(s)+6F-→3CaF2(s)+2PO43-的标准平衡常数K为

    A.Ksp(CaF2)/Ksp(Ca3(PO4)2)

    B.Ksp(Ca3(PO4)2)/Ksp(CaF2)

    C.[Ksp(CaF2)]3/Ksp(Ca3(PO4)2)

    D.Ksp(Ca3(PO4)2)/[Ksp(CaF2)]3


    由题意得 =-6×96500×(-0.0346)J·mol -1 -20.0kJ·mol -1