Вопрос № 284342 - Английский язык

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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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The two most common types of engines for cars are the petrol engine and diesel engine.
Petrol engines are usually lighter and smaller than diesel engines. This makes them cheaper, and this is why most cars use petrol engines. Petrol engines are also led noisy than diesel engines. They usually go faster. On the other hand, diesel engines use less fuel than petrol engines, and this is why trucks use them. They are also safer than petrol engines, because there is less danger of fire.
There are two main types of petrol engine – 4-stroke and 2-stroke. All cars use 4-stroke engines. But most motorbikes use 2-stroke engines. They are lighter and smaller than 4-stroke engines, and are therefore cheaper.
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All cars use …

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Alfred Nobel was a Swedish chemist who lived from 1833 to 1896. Alfred and his brother made explosives, but in 1864 there was an accident in the laboratory and Alfred’s brother was killed. Alfred then decided to spend his life truing to make explosives safer to use.
One of the strongest explosives at that time was nitroglycerine. This explosive, which looks like oily water, is very dangerous to use or even to carry. Nobel wanted to study nitroglycerine so he could find a way to make it safer. Nobel had an idea of taking nitroglycerine out on a boat in the middle of a lake and working with it there.
When Nobel wanted to take the nitroglycerine he was working with from one place to another, he put it into small boxes. Then he put the small boxes into a larger box made of clay. One day, when he opened the large clay box, he found that nitroglycerine was coming out of one of the small boxes. To his surprise, the large clay box was still dry. This gave him the idea of mixing clay with nitroglycerine. The clay would take the oil out of nitroglycerine and make it safer. He called this explosive ‘dynamite’.
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Why did Alfred decide to spend his life trying to make explosives safer to use?

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One day, Nicola Tesla had a vision of a whole new type of electric power system. Tesla went to work as an engineer for the Continental Edison Company. While he was there, he built the first model of his motor. But the people at the company weren’t interested in it. Tesla decided to go to the United States to talk to the great inventor Thomas Edison.
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Why did Tesla decide to go to the United States?

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The first atomic ships were made in our country and abroad. They are: the atomic ice-breaker Lenin and the nuclear merchant ship Savannah.
The ice-breaker Lenin has a displacement of 16,000 tons and can make 18 knots. It is capable of going through two meters of ice. The Lenin has three nuclear reactors developing 44,000 h.p. and can stay at the sea for more than a year without refueling.  
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How long can the Lenin stay at the sea without refueling?

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Nowadays machine tools play an important role in the manufacture of almost all metal products. Machinists (people who operate machine tools) use them in making automobiles, radios, refrigerators, television sets and so on. Every mechanical engineering workshop is equipped with machine tools. They are the main source for the manufacture of component parts of all machine and mechanical devices.
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Who uses machines in making automobiles, radios, refrigerators, television sets?