在SQL中，建立、修改和删除数据库中基本表结构的命令分别为（）、（）和（）命令。
以下不属于企业文化的特点的是（） 民族性。 科学性。 动态性。 艺术性。
You are the system administrator for an electronics manufacturing company. The accounting department uses Windows 98 computers. The department has purchased a third-party spreadsheet application that only runs on Windows 2000 Professional. You need to upgrade the computers to Windows 2000 Professional and install the new application. You choose an unattended installation method for both the operating system and the application. The Windows 2000 Professional installation files reside on a server named Companyrv in a shared folder name W2Ksource. You place the installation files for the spreadsheet application in \\Companyrv\W2Ksource\i386\$OEMS$. You create an answer files named Acctanswer.txt and place in \\Companyrv\W2Ksource. You map drive letter H: to \\Companyrv\W2Ksource and begin the installation on a test computer by running the winnt32 /s:H:\i386/u:H:\acctanswer.text command. Windows 2000 Professional is installed successfully. However, the spreadsheet application is not installed. You want to ensure that the spreadsheet application is installed during the unattended installation. What should you do? （） Run the winnt /s:H:\i386 /u:H:\acctanswer.txt command instead of the winnt32 /s:H:\i386/u:H:\acctanswer.text command. 。 Move the spreadsheet application installation files to \\Companyrv\W2Ksource\i386, and thenrun the winnt /s:H:\i386 /u:H:\acctanswer.txt command. 。 Edit the [Unattended] section of the answer file to contain the parameter OemPreinstall = Yes, and then run the winnt32 /s:H:\i386/u:H:\acctanswer.text command. 。 Rename Acctanswer.txt to Unattend.txt, and then run the winnt32 /s:H:\i386 /u:H:\unattend.text command.。
脂肪酶可以催化油脂与甲醇进行（）反应，生成生物柴油。
Your company has two main offices named Main1 and Main2.An Active Directory site exists for each office. Users connect locally to servers in both offices. The offices connect to each other by using a high-speed WAN link. You plan to deploy Exchange Server 2010. You need to plan the deployment of Mailbox servers to meet the following requirements： .Ensure that users can access their mailbox from a server in their site， if a single Mailbox server fails .Ensure that users can access their mailboxes remotely if a site fails .Minimize the number of servers How many Mailbox servers should you include in the plan？（） 2。 3。 4。 6。
中国新民主主义革命的领导阶级和主力军是（）。
