_____ modems transmit modulated data using electromagnetic waves.: ответ на тест 86601 - Английский язык

A transducer designed to transmit or receive electromagnetic waves is a (an) …

Heinrich Hertz was sure that electromagnetic waves could be used to transmit _______ across the Atlantic, but he died before the use of radio showed that he was right.

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Automation
1. Automation is the use of control systems in concern with other applications of information technology to control industrial machinery and processes, reducing the need for human intervention. In the scope of industrialization, automation is a step beyond mechanization.
2. Automation plays an increasingly important role in the world economy and in daily experience. Engineers strive to combine automated devices with mathematical and organizational tools to create complex systems for a rapidly expanding range of applications and human activities.
3. Many roles for humans in industrial processes presently lie beyond the scope of automation. Tasks requiring subjective assessment or synthesis of complex sensory data, such as scents and sounds, as well as high-level tasks such as strategic planning, currently require human expertise. In many cases, the use of humans is more cost-effective than mechanical approaches even where automation of industrial tasks is possible.
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People need automation nowadays because …

There is a steady ________ for goods of this type.

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In addition to carbohydrates, fats, proteins, mineral salts and water, it is essential that the food of man and animals contains small amounts of the substances called vitamins, which the living organism is unable to manufacture by itself and which have to be supplied from other sources, namely diet. If anyone of same fifteen of more of these compounds is lacking in the diet, there occurs eventually a breakdown of metabolic processes that results in symptoms of malnutrition that are classed, at the deficiency diseases.

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Early Russian Architecture
1. Russian borrowed its early architecture, like its icon painting, from Byzantium. From the eleventh to the thirteenth centuries early towns were built on defensive sites on high river banks. From afar were visible low white walls with towers, churches with brilliant domes and bell towers. The finest examples of traditional architecture can be seen in the towns of Yaroslavl, Kostroma, Suzdal, Bogolyubovo and Sergiev Posad.
2. In Russia, timber has always been the most natural building material. Russian carpenters decorate the diverse structures they were building with beautiful carved decorations above windows and porches. One can see such decorations on log-cabins, fortress towers, huge cathedrals, churches and monasteries.
3. Wooden and masonry architecture developed side by side in medieval Russia, one stimulating and gratifying the love for verticality and slenderness, the other satisfying a yearning for massiveness, monumentality, and lavish decoration in the expression of power and splendour. The few remaining examples of the ancient wooden structures are now in Rostov and also in the museums of wooden buildings in Novgorod, Kostroma and Suzdal. These examples show the skill and gift of their builders to harmonize the building proper with the landscape. Wooden architecture predominates in Northern Russia and in some of the older settlements and towns of the Siberia, such as Tyumen.
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