It is noted that a suspension which is another kind of liquid mixture greatly differs from a solutio...: ответ на тест 1006985 - Английский язык

It is noted that a suspension, which is another kind of liquid mixture, greatly differs from a solution. A suspension may be demonstrated by placing some sand in a glass of water and then stirring the mixture violently for a moment. If this is done, the two substances mix but no solution is effected. The particles of sand, being larger than any of particles of the true solution, mix for a while, but since they move about less freely, they finally settle on the bottom when agitation of the mixture ceases.
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It is noted that a suspension …

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It is noted that a suspension, which is another kind of liquid mixture, greatly differs from a solution. A suspension may be demonstrated by placing some sand in a glass of water and then stirring the mixture violently for a moment. If this is done, the two substances mix but no solution is effected. The particles of sand, being larger than any of particles of the true solution, mix for a while, but since they move about less freely, they finally settle on the bottom when agitation of the mixture ceases.
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The foreign exchange markets are among the largest markets in the world, with annual trading volume in excess of $160 trillion. The purpose of the foreign exchange markets is to bring buyers and sellers of currencies together. It is an over-the-counter market, with no central trading location and no set hours of trading. Prices and other terms of trade are determined by negotiation over the telephone or by wire, satellite, or telex. The foreign exchange market is informal in its operations: there are no special requirements for market participants, and trading conforms to an unwritten code of rules.
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Trade among nations takes place for the same reasons that it does within a nation: to obtain goods and services that a region could not produce itself, or to obtain them at a lower cost than they could be produced for at home. This is explained by the principle of comparative advantage, which states that as long as the opportunity costs to produce items differ between two nations, both will profit by specializing in those things that they produce most efficiently and exchanging their surpluses. Despite the many advantages of international trade, most nations have been erecting artificial barriers to the trade for ages. These barriers are usually in the form of tariffs or quotas.
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Imports must be paid for in a currency that is acceptable to the seller. In order to facilitate these transactions, there is a market for the currencies of all trading nations. The selling price of one nation’s currency in terms of the currencies of other nations is known as its “exchange rate”. Exchange rates fluctuate in accordance with the laws of supply and demand.
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A tariff is a duty, or tax, on imports. There are two basic types of tariffs. Revenue tariffs are levied as a way to raise money. Protective tariffs are levied to protect a domestic industry from foreign competition. The goal is to make the foreign product more expensive then a similar item produced by a domestic producer. Then people will stop buying the foreign-made item and purchase its domestic counterpart. Restrictions on the numbers of certain specified goods that can enter the country from abroad are called quotas. Like protective tariffs, quotas limit the amount of foreign competition a protected industry will have to face.
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