Прочитайте текст и выберите утверждение соответствующее содержанию текста There is a lot of carbon a...: ответ на тест 284586 - Английский язык

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There is a lot of carbon (about 85%) in diesel fuel. There is also a lot of carbon in petrol. There is a little sulphur (about 1%) in diesel fuel and there is no sulphur in petrol. There is a great deal of petrol (about 95%) and a little oil (about 5%) in the fuel mixture for two-stroke engines. There is no oil in the fuel for four-stroke engines. There is a great deal of air (90%) and not much fuel (10%) in the fuel and air mixture.

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There is a lot of carbon (about 85%) in diesel fuel. There is also a lot of carbon in petrol. There is a little sulphur (about 1%) in diesel fuel and there is no sulphur in petrol. There is a great deal of petrol (about 95%) and a little oil (about 5%) in the fuel mixture for two-stroke engines. There is no oil in the fuel for four-stroke engines. There is a great deal of air (90%) and not much fuel (10%) in the fuel and air mixture.

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Copper is a red metal. It is harder and stronger than aluminium and more flexible than steel. Electric wires are generally made of copper because this metal has a high electric conductivity. However, copper is heavier than aluminium and steel.

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The roof is a necessary component of practically every building. It serves to protect the interior of the building from rain, snow, wind, and cold. There exist many types of roofs, the main ones being sloping (pitched) roofs and flat (or nearly flat) ones.

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Engineering is a very practical activity. It is the process of applying the latest achievements of science and technology into practice.
There are a lot of branches in engineering. Mechanical engineers are experts in the design and manufacture of tools and machines. Mechanical engineering has marine, automobile, aeronautical, heating and ventilating branches.

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Graphs are very important for recording the results of any experiments. Now the students are drawing graphs in their exercise books. First, they are giving the graphs a little. Then they are drawing the axes and putting the independent variable along the bottom of the graph paper (the horizontal axis). The other variable depends on this one and the students are drawing it up the side of the paper (the vertical axis). It is also called the dependent variable. The origin of the graph is usually the point (0,0).