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ID: 177886
Дата закачки: 09 Февраля 2017
Продавец: кайлорен (Напишите, если есть вопросы)
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Тип работы: Билеты экзаменационные
Сдано в учебном заведении: ДО СИБГУТИ

Билет №9

Задание 1. Выберите правильный ответ.

1. Today polymers are referred to as materials of vital importance.

2. Much attention is being paid now to the use of polymers because they have many desirable properties.

3. I have never been to London.

4. Einstein was the physicist who has developed the theory of relativity.

5. Last year Kevin bought a car.

6. When we were on holiday the weather was awful.

7. You shouldn’t have eaten so many sweets.

8. I can’t swim until I was five years old.

9.  You have to do this task on time.

10.  To explain this law of mechanics one should know the theory well.

11.  The plastics to be produced in our laboratory will replace iron and its alloys.

12. When translating the article he uses no dictionary.

13. Physics is a science dealing with phenomena of matter and energy.

14.  The new instrument being designed in our laboratory will be used in radio engineering research.

15.  Every atom contains small particles carrying kinds of electricity.

16.  Нaving been designed by young engineers the solar installations was used for melting metals

17. The power station being built in our region will run on local coal.

18. A current flowing through a conductor, a magnetic field is set up.

19. The engine having been tasted the operator started it.

20. A sensitive receiver having been built the electric oscillations could be detected successfully.

21. Other factors being constant, the current is known to be directly proportional to conductivity.

22. If we had used this new system of computation, we were making maximum use of the automation principle.

Задание 2. Прочтите текст и выполните задания к тексту


1. Interest in creating MEMS grew in the 1980s, but it took nearly two decades to establish the design and manufacturing infrastructure needed for their commercial development. One of the first products with a large market was the automobile air-bag controller, which combines inertia sensors to detect a crash and electronic control circuitry to deploy the air bag in response. In the late 1990s a new type of electronic projector was marketed that employed millions of micromirrors, each with its own electronic tilt control, to convert digital signals into images that rival the best traditional television displays.

2. Emerging products include mirror arrays for optical switching in telecommunications, semiconductor chips with integrated mechanical oscillators for radio-frequency applications (such as cellular telephones), and a broad range of biochemical sensors for use in manufacturing, medicine, and security.

3. A technical issue in MEMS fabrication concerns the order in which to build the electronic and mechanical components. High-temperature annealing is needed to relieve stress and warping of the polycrystalline-silicon layers, but it can damage any electronic circuits that have already been added. On the other hand, building the mechanical components first requires protecting these parts while the electronic circuitry is fabricated. Various solutions have been used, including burying the mechanical parts in shallow trenches prior to the electronics fabrication and then uncovering them afterward.

4. Barriers to further commercial penetration of MEMS include their cost compared with the cost of simpler technologies, nonstandardization of design and modeling tools, and the need for more reliable packaging. A current research focus is on exploring properties at nanometre dimensions for devices known as nanoelectromechanical systems (NEMS). These devices, however, become increasingly sensitive to any defects arising to their fabrication.
Are the following statement true, false or no information about it:
Interest in creating MEMS appeared on in the late 1990s.
• false
Are the following statement true, false or no information about it:
The order in which the electronic and mechanical components should be built is a technical issue in MEMS fabrication.
• true
Are the following statement true, false or no information about it:
Another early application for MEMS was in inkjet printheads.
• no information
Are the following statement true, false or no information about it:
The nanoelectromechanical systems are sensitive to defects arising to their fabrication.
• true
Укажите, какой части текста (1, 2, 3, 4) соответствует следующая информация:
MEMS can be used to develop products that are useful in many spheres of people’s lives.
• 2
Укажите, какой части текста (1, 2, 3, 4) соответствует следующая информация:
Even though the interest in creating MEMS grew in 1980s, their commercial use and development started much later.
• 1
Ответьте на вопрос:
What are the barriers to the further commercial expansion of MEMS?
• The cost of MEMS, nonstandardization of design and modeling tools, and the need for more reliable packaging are the obstacles in the way of the further commercial penetration of MEMS.
Определите основную идею текста
• MEMS technologies are useful in many aspects, but there are still some problems in both production and commercial expansion.

Комментарии: экзамен билет №9,зачет,замечаний нет.сдавалась в 2016 году

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