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thombg75
2 năm trước
Bánh xe bé của 1 xe kéo có bán kính là 0.5 m. Bánh xe lớn của chiếc xe kéo đó là 1m . Hỏi bánh xe bé lăn được 10 vòng thì bánh xe lớn lăn được mây vòng
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Các câu hỏi liên quan

1. it's evidence that this ocean is clean and environmentally______ .( pollute) 2. Diseases are primarily due to ______ food and air. (contaminate) 3. while some Chemicals may be harmless others can cause ______. (damage) 4. life expectancy has gone down due to ____ diseases caused by air pollution. (die) 5. in remote regions, the air is pure and the crops are free of _______ insecticides. ( poison) 6. some scientists warn that light _____ damages people and animals. ( pollute ) 7. many chemicals have a ______ effect on the evironment. ( damage) 8. the dumping of _____ i sewage into the sea is a source of ocean pollution. ( treat) 9. A______ is a substance that makes something dirty, polluted, or poisonous. ( contaminate) 10. Water pollution can lead to the ______ of aquatic plants and animals. (die) giup mik vs, mik se tick day du cho cac ban nha!

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