Прочитайте текст и выполните задания. How Batteries Work 1. An electrical battery is a combination o...: ответ на тест 53300 - Английский язык

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How Batteries Work
1. An electrical battery is a combination of one or more electrochemical cells, used to convert stored chemical energy into electrical energy. Since the invention of the first Voltaic pile in 1800 by Alessandro Volta, the battery has become a common power source for many household and industrial applications.
2. Inside the battery itself, a chemical reaction produces the electrons. The speed of electron production by this chemical reaction (the battery's internal resistance) controls how many electrons can flow between the terminals. Electrons flow from the battery into a wire, and must travel from the negative to the positive terminal for the chemical reaction to take place. That is why a battery can be stored on a shelf for a year and still have plenty of power. Once you connect a wire, the reaction starts.
3. Batteries may be used once and discarded, or recharged for years as in standby power applications. Miniature cells are used to power devices such as hearing aids and wristwatches; larger batteries provide standby power for telephone exchanges or computer data centers.
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Why do people use batteries?

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How Batteries Work
1. An electrical battery is a combination of one or more electrochemical cells, used to convert stored chemical energy into electrical energy. Since the invention of the first Voltaic pile in 1800 by Alessandro Volta, the battery has become a common power source for many household and industrial applications.  
2. Inside the battery itself, a chemical reaction produces the electrons. The speed of electron production by this chemical reaction (the battery's internal resistance) controls how many electrons can flow between the terminals. Electrons flow from the battery into a wire, and must travel from the negative to the positive terminal for the chemical reaction to take place. That is why a battery can be stored on a shelf for a year and still have plenty of power. Once you connect a wire, the reaction starts.
3. Batteries may be used once and discarded, or recharged for years as in standby power applications. Miniature cells are used to power devices such as hearing aids and wristwatches; larger batteries provide standby power for telephone exchanges or computer data centers.
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Why do people use batteries?

Прочитайте текст и выполните задания.
How Batteries Work
1. An electrical battery is a combination of one or more electrochemical cells, used to convert stored chemical energy into electrical energy. Since the invention of the first Voltaic pile in 1800 by Alessandro Volta, the battery has become a common power source for many household and industrial applications.  
2. Inside the battery itself, a chemical reaction produces the electrons. The speed of electron production by this chemical reaction (the battery's internal resistance) controls how many electrons can flow between the terminals. Electrons flow from the battery into a wire, and must travel from the negative to the positive terminal for the chemical reaction to take place. That is why a battery can be stored on a shelf for a year and still have plenty of power. Once you connect a wire, the reaction starts.
3. Batteries may be used once and discarded, or recharged for years as in standby power applications. Miniature cells are used to power devices such as hearing aids and wristwatches; larger batteries provide standby power for telephone exchanges or computer data centers.
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In 1872 the Russian scientist Professor of skin diseases A.G. Polotebnov published his article on penicillium glaucum.
He observed the same phenomenon which had been described by V.A. Manassein a year before. Professor A.G. Polotebnov used penicillium glaucum in his practice treating wounds and some skin diseases. The results of the treatment with penicillium glaucum were effective:
it controlled the development of infection and decreased the spread of microbes.
These Russian scientists were the first to observe the specific properties of penicillium glaucum though they were not able to use it in its pure form in medical treatment. The discovery of penicillin was made by the great English scientist Alexander Fleming in 1929.
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Professor A.G. Polotebnov used penicillium glaucum in his practice treating wounds and _______.

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Technology
1. Technology is the usage and knowledge of tools, techniques, and crafts, or is systems or methods of organization, or is a material product of these things. The word technology comes from the Greek technología meaning craft and the study of something, or the branch of knowledge of a discipline. The term can either be applied generally or to specific areas.
2. Technologies significantly affect human as well as other animal species ability to control and adapt to their natural environments. The human species use of technology began with the conversion of natural resources into simple tools. The prehistorical discovery of the ability to control fire increased the available sources of food and the invention of the wheel helped humans in travelling in and controlling their environment. 3. Recent technological developments, including the printing press, the telephone, and the Internet, have lessened physical barriers to communication and allowed humans to interact freely on a global scale. However, not all technology has been used for peaceful purposes; the development of weapons of ever-increasing destructive power has progressed throughout history, from clubs to nuclear weapons.
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Why did technology found its application?

Заполните пропуски в инструкции следующими фразами
The Call Type selection allows you to request a type of call to connect to the system. 1________________ a digital or an analog channel. Requests are granted only as conditions allow. 2________________, check to see that the digital indicator shows that your request was granted. The phone will reset to Dual Mode setting when you:
- 3_______________
- Turn the phone off by pressing and holding down PWR key.
The display will indicate 4________________ with a reverse text D or A displayed in the upper left hand corner.