题目内容

车辆进行检修、整备、停留的线路应平直，确因地形困难，线路纵断面的坡度也不得超（）。

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对施工区域内临近的（），应采取妥善的安全防护措施加以保护，避免影响正常的施工作业。

A. 运行电缆和接头
B. 设备
C. 闲置电缆
D. 工器具

ou are the network administrator for your company. The network consists of a single Active Directory domain. All servers run Windows Server 2003. All client computers run Windows XP Professional.Two of the servers on the network contain highly confidential documents. The company’s written security policy states that all network connections with these servers must be encrypted by using an IPSec policy.You place the two servers in an organizational unit （OU） named SecureServers. You configure a Group Policy object （GPO） that requires encryption for all connections. You assign the GPO to the SecureServers OU. You need to verify that users are connecting to the two servers by using encrypted connections. What should you do？（）

A. Run the net view command.
B. Run the gpresult command.
C. Use the IP Security Monitor console.
D. Use the IPSec Policy Management console.

简述“亮度/对比度”命令主要作用。

简述西安事变的过程及其历史意义。