Прочитайте текст и найдите соответствующий перевод подчеркнутого выражения Videoconferencing: This i...: ответ на тест 781403 - Английский язык

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Videoconferencing: This is communicating via a live video link over the Internet. Conferencing and telephony applications usually cost no more to use than a local phone call, whether you are speaking to someone across town or on the other side of the world. However, they require a very fast, stable connection to the Net, special software; and of course, a video camera, microphone and speakers. Teachers have been making active use of this technology for several years now, especially in distance education and cross-curricular project work.

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Videoconferencing: This is communicating via a live video link over the Internet. Conferencing and telephony applications usually cost no more to use than a local phone call, whether you are speaking to someone across town or on the other side of the world. However, they require a very fast, stable connection to the Net, special software; and of course, a video camera, microphone and speakers. Teachers have been making active use of this technology for several years now, especially in distance education and cross-curricular project work.

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If you travel frequently, or want to read your e-mail in several different locations, you might want to register with one of the hundreds of companies that provide e-mail access through the Web. There is no charge for this service, since advertisers cover most of the operating costs, but there are two definite drawbacks to using Web-based e-mail. Firstly, the services are so popular that access to your mail can be very slow, and
secondly, because you must usually be online to use the service, you will be paying telephone and ISP charges for the entire time it takes you to read and reply to your messages.

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The customary way of using e-mail is by getting the service from your Internet Service Provider. Most ISPs offer you several e-mail accounts and the software to access them as part of their connections package. This is called POP mail. The only time you need to be online is to retrieve or send new messages. You can read and write the replies while you are disconnected from the Internet, saving lots of time and expense.

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There are many web browsers, but the two most popular are Netscape Navigator and Microsoft Internet Explorer. They are both freeware, meaning that they are software programs distributed free of charge. You should receive at least one of these programs bundled into the connection package from your ISP. If not, you will find browsers are often included on the CD-ROMs accompanying computer magazines and books.

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The most common mistake people make when they want to delete their address from a mailing list is to send a message to the list itself, so everyone but the computer they wish to communicate with ends up reading their note. So first, check the welcome message for the original e-mail address; the one that you subscribed to. Then send the unsubscribe message, NO subject, NO signature. You should receive an automated reply telling you that your message was received successfully.