1. Steel - its alloy and the most important metal in industry is iron.
2. Steel is strong and stiff.
3. Steel corrodes easily through rusting.
4. Stainless, steels of low carbon content, medium-carbon steels, high-carbon steels and silver steel. The used in the manufacture; used as structural steels; used in cutting tools, surgical instruments, razor blades and springs.
5. Manganese gives extra strength and toughness. Steel containing 4 per cent silicon is used for transformer cores or electromagnets because it has large grains acting like small magnets. The addition of chromium gives extra strength and corrosion resistance, so we can get rust-proof steels.
6. Of mild steel can made sheet iron, wire, and pipes. Of medium-carbon steel can made structural steels.
Of high-carbon steels made cutting tools, surgical instruments, razor blades and springs.
7. Both mild and medium-carbon steels are suitable for forging and welding.
8. The addition of chromium gives extra strength and corrosion resistance, so we can get rust-proof steels.
9. Heating in the presence of carbon or nitrogen-rich materials is used to form a hard surface on steel.
10. High-speed steels alloyed with contain chromium and tungsten plus smaller amounts of vanadium, molybdenum and other metals.
1. - B)
2. - C)
3. - I)
4. - G)
5. - А)
6. - F)
7. - H)
8. - D)
9. - J)
10. - E)
<em>strong- </em><em>[strɔ:ŋ] </em><em>сильный</em><span>
<em>shoot</em></span><em>- </em><em>[ʃu:t] </em><em>стрелять</em><span>
<em>leader</em></span><em>- </em><em>[’li:dər] </em><em>руководитель, лидер</em><span>
<em>joined</em></span><em>- [dʒɔɪnd] объединенный</em><span>
<em>organize</em></span><em>- </em><em>[’ɔ:rgə‚naɪz] </em><em>организовать, устраивать</em><span>
<em>poor</em></span><em>- </em><em>[pʋər] </em><em>бедный</em><span>
<em>tall</em></span><em>- </em><em>[tɔ:l]</em><span><em> высокий</em></span>
I was always afraid of the dark... So at home in the dark I was moving at a run just another my fear and night terror
<span>was the so-called monster under bed. It is! At night, I always boyles to get out of bed or pull the legs from under the blanket, because I thought someone was in there.</span>
Посвящается Тине
Ты приглашена на мой день рождения
в субботу 15 декабря в 17:30
Мой адрес 18,....
я жду тебя там
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