煤气作业现场离作业面（）m以内的机械转动部位安装防护罩 ["2","1","3","5"]
在网络环境下，当多个用户同时访问数据库时，就会产生并发问题，SQLServer是利用（）成并发控制的。
You are the network administrator for your company. The network originally consists of a single Windows NT 4.0 domain. You upgrade the domain to a single Active Directory domain. All network servers now run Windows Server 2003, and all client computers run Windows XP Professional. Your staff provides technical support to the network. They frequently establish Remote Desktop connections with a domain controller named DC1. You hire 25 new support specialists for your staff. You use Csvde.exe to create Active Directory user accounts for all 25. A new support specialist named Paul reports that he cannot establish a Remote Desktop connection with DC1. He receives the message shown in the Logon Message exhibit. (Click the Exhibit button.) You open Gpedit.msc on DC1. You see the display shown in the Security Policy exhibit. (Click the Exhibit button.) You need to ensure that Paul can establish Remote Desktop connections with DC1. What should you do? （） [" Direct Paul to establish a VPN connection with DC1 before he starts Remote Desktop Connection."," Direct Paul to set a password for his user account before he starts Remote Desktop Connection."," In the local security policy of DC1, disable the Require strong (Windows 2000 or later) session key setting."," In the local security policy of DC1, enable the Disable machine account password changes setting"]
你是TestKing的电脑管理员，Tom是会计部门的用户。在公司，Tom使用笔记本电脑Portable1运行WindowsXP专业版，他还在家庭网络上使用该电脑，Tom的家庭网络还包括另外两台电脑，运行Windows98系统。Tom的家庭网络包含一个调制解调器和网关设备，网关设备允许Tom家庭网络的所有电脑通过调制解调器连接网络。然而，网关设备并没有包含DHCP服务器。Tom报告说Portable1在家庭网络里不能连接英特网，Portable1连接到公司网络时能够访问网络。你检测一下Portable1的局域网TCP/IP设置，你发现该电脑从公司的DHCP服务器获取IP地址，你要设置Portable1这样它能通过家庭网络连接英特网，你还要确保Portable1通过公司的网络能连接网络，你要怎么做呢？（） ["在Portable1上通过拷贝默认的硬件配置文件建立第二个硬件信息，建议Tom在家时使用第二个硬件配置文件","建议Tom修改他的网关设备设置，这样内部IP地址与公司的默认网关的IP地址一样","设置Portable1的TCP\/IP属性静态的IP地址，从公司的DNS服务器得到的IP地址在公司的网络可用，建议Tom修改他的网关设备设置，这样外部IP地址与公司的默认网关的IP地址一样","设置Portable1的TCP\/IP属性静态的IP地址，从公司的DNS服务器得到的IP地址在公司的网络可用，该IP地址通过ISP分配给Tom"]
在教学过程中怎样引起学生注意？
等密度梯度离心
