Вопрос № 782203 - Английский язык

Расположите пропущенные предложения в таком порядке, чтобы получился связный текст
1_______. The laser medium can be a solid, gas, liquid or semiconductor.
2_______. A ruby laser is a solid-state laser which emits at a wavelength of 694 nm. Other lasing mediums can be selected based on the desired emission wavelength, power needed and pulse duration. 3_______. The reason that CO2 laser is so dangerous is because it emits laser light in the infrared and microwave region of the spectrum. 4_______.

Дополните диалог:
Teacher: Hello, my friends. Today, I’m going to show you an operating 1_______.
Ivan: That’s great! By the way, what does the word “laser” mean?
Teacher: 2_______. Looking at the operating laser one can see it producing a very powerful beam of light.
Ivan: When did the first lasers appear, I wonder?
Teacher: As far as I know, in the 1960s. Yet, we hear of their having numerous applications. 3_______.
Ivan: And how do lasers work?
Teacher: Their work is based on the principle of amplifying the light of a certain wavelength in the resonator cavity.
Ivan: I’m rather interested in making experiments with laser beams.
Teacher: Then let’s try to make one. But be very careful. Lasers can be very 4_______.
Ivan: Why are they dangerous?
Teacher: Well, they produce a very powerful beam of light and if treated in the wrong way it can hurt or even kill you.
Ivan: Oh, I’m pretty scared.
Teacher: Don’t worry. If you follow all the safety instructions nothing will happen to you.

Расположите пропущенные предложения в таком порядке, чтобы получился связный текст
 The Montgoflfier brothers built the first hot-air balloon in France.
1_______. They went up in a basket on September 19th, 1783. The balloon flew for about three kilometers.
 2_______. They travelled nine kilometers in twenty-five minutes.
3_______. The balloonists were two Englishmen in India. The biggest hot-air balloon is the Gerald A. Heineken. 4_______.

Расположите пропущенные предложения в таком порядке, чтобы получился связный текст
Lifts are controlled by a microprocessor in the machine room.This logs all passenger calls and monitors the number of passengers travelling from floor to floor, the position of any car in the system, and its speed. 1 _______. Lifts have many safety devices which make it virtually impossible for an accident to happen. 2 _______. Each one is strong enough to support the car. If the car starts too quickly, a governor or safety brake locks the car to the guide rails. 3 _______. Doors on the car ensure that no passenger can be injured by contact with the shaft. The car cannot move until both sets of doors are closed. 4 _______. All these things combined make travel in lifts one of the safest journeys you can make!

Прочитайте текст
For large-screen and wide-screen TVs, the sockets come with double-focus gaps. The socket works from 29.1 to 32.5 mm and base pin circles of 15.24 mm. To save time in connection, the sockets come with two high-voltage wires that offer a snap-in format. Engineers can remove these wires from the socket easily, for maintenance. At the same time, the compact design saves space in board mounting. With a DC 20 kV/min. withstanding voltage, the socket offers an insulation resistance greater than 10,000Щ at DC 1 kV. The spark discharge start voltage equals DC 14 to 17 kV for the number 1 and 2 pins, DC 1.2 to 2.4 kV for number 8 pin, and DC 1 to 2.2 kV for the number 6, 7, 9, 10, 11 and 12 pins.
Закончите предложение
Engineers can remove these wires from the socket easily, _______.

Прочитайте текст
The standard model of the display supports a maximum resolution of 600 dpi (non-interpolated) and generates image data in composite colour, monochrome and black-and-white. The scanner precisely positions a RGB line camera segment by segment across the rotating drum. Thereby it generates a 3 × 10-bit data stream which gets on the fly gamma corrected and re-sampled to image data formats True Colour RGB 4 or 8-bit composite colour, 8-bit monochrome or binary black/white. The scanner incorporates a fast Pentium PC which by itself contains a 2 Gb SCSI- 2 disk and a network adapter. A 17 monitor, keyboard and mouse are included. With its Ms Windows operating software, the SG 906 represents a complete and ready-to-use scan station.
Закончите предложение
A 17 monitor, keyboard ________.