es dsl 提取不重复值

This week we take a look at flaky DSL connections, extracting media from PowerPoint presentations, and how to lock down IE to a single website without any additional software or network configuration hacking necessary.

本周，我们来看看DSL不稳定的连接，从PowerPoint演示文稿中提取媒体以及如何将IE锁定到单个网站而无需任何其他软件或网络配置黑客攻击。

Once a week we dip into our reader mailbag and help readers solve their problems, sharing the useful solutions with you in the process. Read on to see our fixes for this week’s reader dilemmas.

每周一次，我们浸入读者的邮袋，并帮助读者解决问题，并在此过程中与您分享有用的解决方案。 请继续阅读以了解本周读者困境的修复方法。

诊断持久性DSL连接问题 (Diagnosing a Persistent DSL Connection Issue)

Dear How-To Geek,

亲爱的How-To Geek，

I’m having problems with my broadband internet connection. When the phone rings (and I answer it), my broadband connection times out. No phone call, no problems. Phone calls, lost broadband connection? I have DSL-based broadband and a regular land line for my telephone service. Where do I start?

我的宽带互联网连接出现问题。 当电话响起(我接听)时，我的宽带连接超时。 没有电话，没有问题。 电话，宽带连接丢失？ 我有基于DSL的宽带和电话服务的固定陆线。 我从哪说起呢？

Sincerely,

真诚的

Put Me on the No Call List Please

请把我放在无电话清单上

Dear No Call,

亲爱的没有电话，

Check all the phone lines in your house to ensure they have a filter on them. are analog low-pass filters designed to prevent interference between the frequencies used by your DSL service and the frequencies used by your telephone service. You should have a filter on every telephone, fax machine, and other voice-band device in your home or business (don’t forget to check often overlooked but still connected devices like your ). Without the filters in place the telephones and fax machines can interfere with the lower end of the DSL frequency and cause connection issues, including the drops you’re experiencing.

检查房屋中的所有电话线，以确保其上装有过滤器。 是模拟低通滤波器，旨在防止DSL服务使用的频率与电话服务使用的频率之间发生干扰。 您应该在家庭或企业中的每部电话，传真机和其他语音频带设备上都配备一个过滤器(不要忘记检查经常被忽略但仍保持连接的设备，例如 )。 如果没有适当的过滤器，电话和传真机可能会干扰DSL频率的低端并导致连接问题，包括您遇到的掉线问题。

If you already have filters on all the lines, call your service provider and ask if they will send a set of new ones out—you likely have a bad one somewhere in the mix. If you replace the filters and still have connectivity issues there is a chance that there is an issue with your telco provider’s filters/wiring somewhere between your home and their equipment. Things become more complicated here—if it’s an issue with the wiring in your house then you’ll likely be footing the bill to repair it, if it’s an issue with the outside wiring or their equipment they’ll take care of it.

如果您已经在所有线路上安装了过滤器，请致电您的服务提供商，并询问他们是否会发送一组新的过滤器-您可能在其中的某个地方有一个不好的过滤器。 如果您更换过滤器后仍然存在连接问题，则可能是您的电信服务提供商的过滤器/您的房屋与设备之间的某个地方存在接线问题。 这里的事情变得更加复杂-如果这是您家中布线的问题，那么您可能会花钱修理它；如果这是外部布线或其设备的问题，他们会予以解决。

从PowerPoint演示文稿中提取媒体文件 (Extracting Media Files from PowerPoint Presentations)

Dear How-To Geek,

亲爱的How-To Geek，

I have a PowerPoint presentation I want to extract the media files from (such as the background music). How can I do so? There doesn’t appear to be any way to save the audio and video in the slideshow separately from the slideshow itself. Thanks!

我有一个PowerPoint演示文稿，我想从中提取媒体文件(例如背景音乐)。 我该怎么办？ 似乎没有任何方法可以将幻灯片中的音频和视频与幻灯片本身分开保存。 谢谢！

Sincerely,

真诚的

PowerPoint Jam Master

PowerPoint Jam Master

Dear Jam Master,

尊敬的果酱大师，

You’re in luck. This fix is so simple you’ll be like “No way?” and we’ll be like “Way!” (or something similarly Wayne’s Worldian in nature). If you have Office 2007 or above you can open the Powerpoint presentation, resave it as a .pptx file if it’s not already in the updated format, then rename the file with a .zip extension (such as newfile.pptx –> newfile.zip). Open the zip file and you’ll find all the media neatly organized in directories. Office files are secretly organized using a simple Zip file format! If you want to read more about this super sneaky hack that relies on the tidy organization of PowerPoint files, .

你真幸运。 此修复非常简单，您会像“没有办法？” 然后我们会像“ Way！” (或类似的Wayne Worldian)。 如果您具有Office 2007或更高版本，则可以打开Powerpoint演示文稿，如果尚未以更新的格式将其重新保存为.pptx文件，然后使用.zip扩展名重命名该文件(例如newfile.pptx –> newfile.zip )。 打开zip文件，您会发现所有媒体都整齐地组织在目录中。 Office文件是使用简单的Zip文件格式秘密组织的！ 如果您想了解更多有关依靠PowerPoint文件的整洁组织的超级潜行黑客的信息， 。

将Internet Explorer限制为一个网站 (Restrict Internet Explorer to One Web Site)

Dear How-To Geek,

亲爱的How-To Geek，

Is it possible to limit a computer to one website? I don’t just want a home page I want to limit users to that home page (specifically, an encyclopedia the users are allowed to access). The computer in question is running Windows 7 and Internet Explorer 8.

是否可以将计算机限制在一个网站上？ 我不仅想要一个主页，而且希望将用户限制为该主页(特别是允许用户访问的百科全书库)。 有问题的计算机正在运行Windows 7和Internet Explorer 8。

Sincerely,

真诚的

One Page to Rule Them All

一页全部统治

Dear One Page,

亲爱的一页，

Internet Explorer has a built in content-management system that you can take advantage of to meet your super focused white-listing needs. First, download this file from our server,  (it’s a dummy rating file for Internet Explorer’s Content Advisor tool, we’ll explain more about it in a moment).

Internet Explorer具有内置的内容管理系统，您可以利用它来满足超级关注的白名单需求。 首先，从我们的服务器下载此文件(这是Internet Explorer的Content Advisor工具的虚拟评级文件，我们稍后将详细说明)。

Fire up Internet Explorer. Navigate to Tools –> Internet Options – Content. Click on Enable under Content Advisor (it will prompt you to set a Supervisor Password before you continue, do so now) then click Settings. Under settings click on General and then on Ratings System…, there you’ll click on Add and then navigate to whitelist.rat file you saved earlier. When you have the whitelist added, it should appear as WhiteListOnly in your Rating Systems list. Once you confirm that it’s on the list then you can select the default ratings system ICRA3 and click Remove. Click OK to return to the Content Advisor settings menu.

启动Internet Explorer。 导航到工具-> Internet选项-内容 。 单击“ Content Advisor”下的“ Enable ”(它会提示您设置超级用户密码，然后继续操作，现在就这样做) 然后点击设置 。 在“设置”下，单击“ 常规” ，然后在“ 评分系统…”上 ，单击“ 添加” ，然后导航到先前保存的whitelist.rat文件。 添加白名单后，它应在“评分系统”列表中显示为“ WhiteListOnly” 。 确认它在列表中后，您可以选择默认的评分系统ICRA3 ，然后点击删除 。 单击“确定”返回到Content Advisor设置菜单。

Normally the Content Advisor tool calls on an remote database of web site ratings and compares them to the sites the user is trying to access. The dummy file you downloaded earlier has fake web addresses in it and points to no such database. As a result the only thing Internet Explorer will have to go off of is the white list from Content Advisor. Let’s create that white list now; in the Content Advisor Settings Menu click on the Approved Sites tab. If there are any entries under it remove them. Add in the website you want your users to access, such as and click Always.

通常，Content Advisor工具会调用网站评分的远程数据库，并将其与用户尝试访问的网站进行比较。 您先前下载的虚拟文件中包含伪造的网址，并且没有指向任何此类数据库。 因此，Internet Explorer唯一需要做的就是来自Content Advisor的白名单。 让我们现在创建该白名单； 在Content Advisor的“设置”菜单中，单击“ 批准的站点”选项卡。 如果下面有任何条目，请将其删除。 添加您希望用户访问的网站，例如 ，然后点击始终 。

The screenshot above shows the white list in action. We visited Wikipedia then tried to navigate to Super Pete’s Porno Castle. The ol’ Porno Castle wasn’t on the white list and Internet Explorer blocks it, indicates that the site has no rating, and requests a supervisor password. Success!

上面的屏幕截图显示了运行中的白名单。 我们访问了Wikipedia，然后尝试导航到Super Pete的Porno Castle。 ol'Porno Castle不在白名单上，Internet Explorer阻止了它，表明该网站没有评级，并要求管理员密码。 成功！

---

Have a question you want to put before the How-To Geek staff? Shoot us an email at

---

您想向How-To Geek员工提出问题吗？ 向我们发送电子邮件至 and then keep an eye out for a solution in the Ask How-To Geek column. ，然后在Ask How-To Geek专栏中关注解决方案。

翻译自:

es dsl 提取不重复值