Вопрос № 223821 - Английский язык

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The Empire State Building was built in 1931 in the United States of America. Its construction took about two years. The exterior of the sky-scraper is supported by a framework produced of steel. It should be noted that 60,000 tons of steel were used for its production. The Empire State Building is considered to be one of the tallest and spacious constructions of the world. It can be attended by 80,000 people simultaneously.
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How much time did the construction of the Empire State Building take?

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The Empire State Building was built in 1931 in the United States of America. Its construction took about two years. The exterior of the sky-scraper is supported by a framework produced of steel. It should be noted that 60,000 tons of steel were used for its production. The Empire State Building is considered to be one of the tallest and spacious constructions of the world. It can be attended by 80,000 people simultaneously.

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There are different shapes. They are triangles, squares, rectangles and circles.
Triangles have three sides and three angles. Squares and rectangles have four sides. Squares have four equal sides, but rectangles have two equal sides. Circles do not have angles and sides.
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How many equal sides do squares have?

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There are some basic types of fuel for motor vehicles. There is diesel fuel, there is petrol and there is fuel mixture.
A lot of buses have diesel engines but not only a few cars have such engines. There are also a few cars with two-stroke engines but most cars have four-stroke engines.
Most lorries have diesel engines. There are not many lorries with four-stroke petrol engines but there are lorries with two stroke engines.
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What engines do a lot of buses have?

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Many of the robots today perform different jobs. Robots are used in various branches of industry. A modern robot is a complex structure with a number of components. Each of them performs a certain task. Scientists have developed new models of robots. Such robots are used for various purposes.
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What have scientists developed?

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Concrete is produced by combining coarse and fine aggregates, Portland cement, and water. Coarse aggregate is generally gravel or crushed stone, and fine aggregate is sand. Cement, sand, gravel and water are taken in proportional amounts and mixed. The quality of concrete depends mostly on the quality of the cement used. The process of production consists in pouring the mixed components into forms and holding them there until they harden. The process of hardening generally lasts for about 28 days.
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What does the quality of concrete depend on?