Английский язык - второй семестр

Контрольный тест №4

Выберите правильный перевод

These substances are thought of as being mixtures.
The students watched the substance changing its colour.
The fibres being so small, thousands of them could be put in one tiny cable.
With the results having been obtained, we continued our work.
Computers have allowed companies to deal with information more effectively.
The quality of an image is known to depend on the number of pixels.
We believe a relational database to be the most common type of database.
It made the developers improve the device.
The work finished, they left the laboratory.
Some new devices having been obtained, the researchers could make more complex experiments.
This investigation is unlikely to produce good results.
Virus checker allows viruses to be found and destroyed.
The results obtained proved to be different from the expected ones.
Sound travels in water at the speed of about a mile per a second, the exact speed depending upon the temperature of water.
The experiments showed the radioactive body to give out alfa, beta and gamma radiation.

Определите функцию инфинитива в предложении.

To understand the properties of electrons the students carried out a laboratory work. обстоятельство
To send highly sensitive information via email or fax is unsafe.
To obtain a useful signal information must be superimposed on the radio waves.
The language to be used for processing the text input is PERL.
To control current from the cathode to the anode a control grid is used.
To obtain good performance of the given network is rather difficult under such circumstances.
He marked up the elements to be displayed in bold.
To complete the experiment on time is of great importance.
A few examples of the texts to be translated are given below.
To send and receive exact copies of documents is the task of a telefax.

Выберите правильный перевод подчеркнутых глагольных форм.

Mainframe computers usually process several application programs concurrently, switching
The demonstration of our new device followed by its discussion was much spoken about.
Having been improved the device provides speedy connectivity. from one to the other.
Grounding radio-sets we protect them from discharges of atmospheric electricity.
The application downloaded allowed a user to display data in a pictorial form.
Having connected the antenna we can tune the receiver to the carrier frequency.
Microchips are tiny pieces of silicon containingcomplex electronic circuits.
Using sunlight as a source of energy offers considerable advantages.
The main memory holds the instructions and data being processed by the CPU.
Using disk drive, you can read and write data on disks..