题目内容

长途线路障碍分为一般障碍、逾限障碍、（）和重大障碍。

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更多问题

You are the network administrator for The network consists of a single Active Directory domain named All servers run Windows Server 2003. All client computers run Windows XP Professional. You install Software Update Services (SUS) on a network server named Testking1. When you attempt to synchronize Testking1 with the Windows Update servers, you receive an error message. You suspect that your proxy server requires authentication. You open Internet Explorer and verify that you can communicate with an external Web site by using the proxy server. You need to ensure that Testking1 can communicate with the Windows Update servers. What should you do on Testking1?（）

A. Restart the IIS administration tool.
B. Configure the Internet Explorer settings to bypass the proxy server.
C. In the SUS options, configure authentication to the proxy server.
D. Install the Microsoft Firewall Client.

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长途线路障碍分为一般障碍、逾限障碍、（）和重大障碍。

什么是无障碍设施？

简要回答托收方式的利弊。

当因果反馈环中的一个变量发生变化，通过环中各组分间依次发生的连锁反应，使变量的变化增强，最后使系统远离初始状态。这种自我强化的因果反馈环称为（）。