Прочитайте текст и определите какой из заголовков соответствует тексту. Metals are materials most wi...: ответ на тест 1046593 - Английский язык

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Metals are materials most widely used in industry because of their properties. The study of the production and properties of metals is known as metallurgy.
The separation between the atoms in metals is small, so most metals are dense. The atoms are arranged regularly and can slide over each other. That is why metals are malleable (can be deformed and bent without fracture) and ductile (can be drawn into wire). Metals vary greatly in their properties. For example, lead is soft and can be bent by hand, while iron can only be worked by hammering at red heat.

Metals are materials most widely used in industry because of their properties. The study of the production and properties of metals is known as metallurgy.
The separation between the atoms in metals is small, so most metals are dense. The atoms are arranged regularly and can slide over each other. That is why metals are malleable (can be deformed and bent without fracture) and ductile (can be drawn into wire). Metals vary greatly in their properties. For example, lead is soft and can be bent by hand, while iron can only be worked by hammering at red heat.
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The field of engineering has its subject the prevention of accidents. Safety engineers develop methods and procedures to safeguard workers of hazardous occupations. They also assist in designing machinery, factories, ships, and roads, suggesting alternations and improvements to reduce accidents.

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Engineers in industry work not only with machines but also with people, to determine, for example, how machines can be operated most efficiency by 1_______. This is called ergonomics. The aim of 2_______ is to make the working place more comfortable and the work easier. A small change in the location of the controls of a machine or of its position with relation to other machines or 3_______, or a change in the muscular movements of the operator, often results in greatly increased production. Ergonomics looks for criteria for the efficient design of large, complicated control panels that monitor 4_______ reactor operation.

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Automation is performing certain tasks, previously done by people, by machines only. The sequences of operations are controlled 1_______. The most familiar example of a highly automated 2_______ is an assembly plant for automobiles or other complex products.
The term automation is also used to describe nonmanufacturing systems in which automatic devices can 3_______ independently of human control. Such devices as automatic pilots, automatic telephone equipment and automated control systems are used to perform various operations much faster and 4_______ than could be done by people.

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Why were originally industrial robots designed?
Industrial robots, originally designed only to perform simple tasks in environments dangerous to human workers, are now widely used to transfer, manipulate, and position both light and heavy workpieces performing all functions of a transfer machine.
In the 1920s the automobile industry for the first time used an integrated system of production. This method of production was adopted by most car manufacturers and became known as Detroit automation.