You’re feeling rotten-weak shivery with an aching head back and limbs. Your temperature’s up over 38...: ответ на тест 1006867 - Английский язык

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You’re feeling rotten-weak, shivery, with an aching head, back and limbs. Your temperature’s up over 38°C (100°F). Probably you’re sweating a lot, you’ve lost your appetite and you feel sick. You’ve got flu.
So what do you do?
There’s no quick cure. Flu – influenza – is caused by a virus. And viruses can’t be killed with antibiotics. Only the body’s own defence system can get rid of them. A bout of flu lasts from 24 hours to several days.
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Probably you’re sweating a lot, you’ve lost your appetite and you feel …

You’re feeling rotten-weak, shivery, with an aching head, back and limbs. Your temperature’s up over 38°C (100°F). Probably you’re sweating a lot, you’ve lost your appetite and you feel sick. You’ve got flu.
So what do you do?
There’s no quick cure. Flu – influenza – is caused by a virus. And viruses can’t be killed with antibiotics. Only the body’s own defence system can get rid of them. A bout of flu lasts from 24 hours to several days.
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Flu is accompanied by …

In digital television broadcasting, there are three competing standards that are likely to be adopted worldwide. These are the ATSC, DVB and ISDB standards. All three standards use MPEG-2 for video compression. ATSC uses Dolby Digital AC-3 for audio compression, ISDB uses Advanced Audio Coding (MPEG-2 Part 7) and DVB has no standard for audio compression but typically uses MPEG-1 Part 3 Layer 2. The choice of modulation also varies between the schemes.
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In digital audio broadcasting, standards are much more unified with practically all countries choosing to adopt the Digital Audio Broadcasting standard (also known as the Eureka 147 standard). The exception being the United States which has chosen to adopt HD Radio. HD Radio, unlike Eureka 147, is based upon a transmission method known as in-band on-channel transmission that allows digital information to “piggyback” on normal AM or FM analogue transmissions.
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Signals can be either analogue or digital. In an analogue signal, the signal is varied continuously with respect to the information. In a digital signal, the information is encoded as a set of discrete values (for example ones and zeros). During transmission the information contained in analogue signals will be degraded by noise. Conversely, unless the noise exceeds a certain threshold, the information contained in digital signals will remain intact. This noise resistance represents a key advantage of digital signals over analogue signals.
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In digital television broadcasting, there are three competing standards that are likely to be adopted worldwide. These are the ATSC, DVB and ISDB standards. All three standards use MPEG-2 for video compression. ATSC uses Dolby Digital AC-3 for audio compression, ISDB uses Advanced Audio Coding (MPEG-2 Part 7) and DVB has no standard for audio compression but typically uses MPEG-1 Part 3 Layer 2. The choice of modulation also varies between the schemes.
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