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XVII. Find in the text the sentences describing

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  1. Adjectives Describing a Person's Character
  2. B) Make up your own sentences with them.
  3. Comment on some of Twain’s remarks when describing the quality of student papers. Explain why the commentary is so biting. Translate the sentences into Russian.
  4. Complete the sentences
  5. Complete the sentences, using the words from Ex. 3. Three of them are used twice. The first one is done for you.
  6. Complete these sentences using the correct form of one of the words above. Make sentences of your own to show that you understand the difference in their meaning.
  7. Complete these sentences using the correct form of one of the words above. Make your own sentences to show that you understand the difference in their meaning.
  8. Conditional Sentences. The Mixed Conditional.
  9. Conditional Sentences. The Second Conditional.
  10. D) Choose one of the words to complete the sentences
  11. Encircle the Participles, mark the Present Participle with “Pres.” and Past Participle with “Past” and translate the sentences into Russian.
  12. Ex.1. Complete the sentences using the correct passive (continuous) form of the verbs in brackets.

1. cooling water effect

2. smothering water effect

3. a number of carbon dioxide extinguishing properties

4. special effect of carbon dioxide for confined fires

5. fire extinction of flammable liquids

XVIII. Translate the microtext in writing:

Dry Chemical Extinguishant

A dry powder consisting primarily of sodium bicarbonate is used as a fire extinguishant. The powder must have the correct particle size. The action of the powder is threefold. The most important stage is to generate carbon dioxide by chemical reaction.

This reaction being caused by the heat of the fire, the carbon dioxide is generally used precisely where it is needed. Secondly, the powder cools the burning material. Thirdly, it prevents access of air.

Dry chemical is useful for small fires, and especially electrical fires. Sodium bicarbonate is nontoxic, does little or no secondary damage, and easily cleaned up after the fire.

 

XIX. Find in the text English equivalents to the following words and word combinations:

поглощает тепло; охлаждает горящие материалы; превращается в теплоту, ниже температуры возгорания; вторичный эффект, газообразное состояние, окружать, процесс горения, так же, как и, морская вода, пресная вода, ряд свойств, электронное оборудование, пена, хорошее качество, пенное покрытие, превосходная стабильность; смежная поверхность, исключать; летучий; в дополнение к, замкнутые пространства

 

XX. Retell the text " Extinguishing Agents" in brief

ADDITIONAL MATERIAL

TEXT 1

Extinction of Different Classes of Fires

The selection of fire attack method is dependent upon the class of involved fuel. Fuel classification creates a criterion for agent selection because each fuel type has reactions to different agents.

Class "A" combustibles are normally extinguished best by an agent that provides cooling. Water is the best agent to perform this task.

Class "B" combustibles are extinguished best by an agent that utilizes the mechanism of starving, or oxygen deprivation. Agents that fall into this category are gases like carbon dioxide. Class "B" combustibles can also be extinguished by foams and dry chemicals.

Class "C" combustibles are actually class "A" or "B" fuels that have been energized. While they are energized, they cannot be effectively attacked with any agent that is a conductor of electricity. Once the fuel is deenergized, the fuel reverts to its normal characteristics. Usually, the best agent for attack on class “C” fires is a gas or dry chemical.

Class "D" combustibles are extremely difficult to extinguish. The agents best suited for attack on them are those that do not react violently with the material. Dry powders like G — 1 or metal - X are primarily used in this type of fire.

TEXT 2

 


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