_____ is a device used for measurement of distances.: ответ на тест 303668 - Английский язык

_____ is a device used for measurement of distances.

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A superconductive electric cable was made by the research workers at the Power-Engineering Institute. It is a very useful device and its main property is its being cryogenic. Compared with other types of cables, it has a great advantage – its use will result in transmitting current practically without losses, which is of great importance since nowadays percentage of losses in transmitting electric power over long distances is rather high; it is ten per cent and even more.
The properties of the new cable being unique, electric current up to 10,000 amp at 10,000 V and more can be transmitted over long distances. The superconductive cryogenic transmission lines are especially efficient for Russia: the power resources of the country are known to be concentrated mainly in the eastern parts of the country while three-quarters of the industrial potential are concentrated in the European part.

_____ is one of the coordinates determining the position of points
 on the Earth’s surface.

_____ is (are) a combination of three figures determining the position of a point on the Earth’s surface.

_____ is a process of definition of the heights of points on the Earth’s surface in connection with the sea level.

_____ is the study of the theories and methods of definition of the figure, the sizes and the gravitational field of the Earth.