Размещено 4 года назад по предмету
Английский язык
от Nastya171167
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1. Can aluminium alloys possess the strength of steel? 2. Is aluminium an excellent conductor when it is in direct contact with a heat source? 3. Has aluminium replaced copper- in high-voltage power lines? 4. Do you think aluminium can be remelted over and over? 5. Does copper add strength when it is alloyed wi th aluminium? 6. Is it true that aluminium exists only in combination with other elements? 7. When combined with oxygen, what does aluminium form? 8. Aluminium is not the most abundant of metals, is it? 9. Do aluminium alloys resist salt water's corroding effect?