Вопрос № 223944 - Английский язык

Установите последовательность пропущенных в тексте слов.
The roof is a necessary component of practically every 1_______. It serves to protect the interior of the building from rain, snow, wind, and cold. There exist many types of 2_______, the main ones being sloping roofs and flat ones. It is a well-known fact that every roof should 3_______a covering. The type of covering of a roof mainly depends on the 4_______ of the roof and some other factors.

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Generally the load on roofs consists of two components: the snow load and the wind-pressure. The action of these loads is quite different on flat roofs and pitched ones. The snow load on flat roofs is great; practically it is at the maximum. As to the wind pressure on roofs of this type, it is very small – practically it is at its minimum. On pitched roofs the situation is different; when the pitch of the roof increases the weight of the snow load decreases. As to the wind-pressure, it increases with the increase of the pitch.
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On pitched roofs when the pitch of the roof increases the weight of the snow load …

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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).

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A student is experimenting with the remote control at the moment. He is putting a piece of white card about 2 cm in front of the control. The control is still operating because the beam is reflecting off the card and then the wall behind.
Now the student is using a piece of black card instead of the white card. This time the signal is not reaching the receiver. Why?
Answer: the black surface absorbs the infrared rays and does not reflect it back into the room.

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The students of the technical school were carrying out the experiment with a multimeter in the lab last week. They were checking a mains socket in the wall and they were following all the safety instructions. Paul was using two probes that time. While he was inserting them into two terminals of the socket, his groupmate Alex was turning the function selector switch to the VAC (voltage alternating current) range. The needle was indicating the pressure of electricity, i.e. the voltage in the mains. Everybody was watching the indications on the volts scale. It was 220 volts. Next time they are planning to measure the current in a table lamp.