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HT
7 tháng 11 2016
"Ferocious crocodiles plunge into the hotel pool attacking female guests
The Daily Mail has published video recording frightening spectacle of ferocious crocodiles plunge into a swimming pool in the hotel in Kariba, Zimbabwe.
Crocodile 2m long passed the fence and crawl to swim. When you see a couple is swimming in the pool, the crocodile has plunged.
While boys hurry to jump ashore, the girls have to fight with the alligator aggressive. She was lucky to avoid the bites of alligators before climbing ashore. She proved to be extremely frightened. "
8 tháng 11 2016
"Ferocious crocodiles plunge into the hotel pool attacking female guests The Daily Mail has published video recording frightening spectacle of ferocious crocodiles plunge into a swimming pool in the hotel in Kariba, Zimbabwe. 2m long crocodile was over the fence and crawl to swim. When you see a couple is swimming in the pool, the crocodile has plunged. While boys hurry to jump ashore, the girls have to fight with ferocious crocodiles. She was lucky to avoid the bites of alligators before climbing ashore. She proved to be extremely frightened. "
22 tháng 3 2023
Nowadays, pollution is a common term with everyone in the world and air pollution is one of the most polluting types. The definition of air pollution is one of the updated headings on air pollution, regardless of indoor or outdoor. The physical changes, biology or chemistry of the air in the atmosphere can be called pollution. There are a number of causes of air pollution such as fossil nature, agricultural activity, emissions from factories and industry, mining operations and indoor air pollution. Umbrella always has bad effects that affect our lives. Toxic gases, dust and smoke enter the atmosphere and make it difficult for plants, animals and humans to survive. We can also see some examples of the results of air pollution occurring around us such as global warming, acid rain, and ozone depletion. The effects of air pollution are reliable, so governments around the world need to have appropriate environmental protection policies, especially air quality to create a clean world, our system of the future.
22 tháng 3 2023
We know how dangerous air pollution and soil pollution do to people. And to reduce them we have such many good ways. Remember to treat your rubbish before throwing it into the trash can. Don't throw trash everywhere. Planting more trees will transfer CO2 into O2, we need O2 to live. Use fewer plastic bags, plastic bags are cheap but they will slowly kill your health. That are a few of the many ways that will reduce air pollution and soil pollution.
28 tháng 2 2020
1.Một con cá đang bơi dưới hồ nước, con cá đang ở vị trí cách mặt nước 2 m. Khối lượng
riêng của nước là 1000 kg/m 3 . Áp suất khí quyển là 76 cm Hg. Trọng lượng riêng của thủy ngân là
136000 N/m 3 . Con các đang phải chịu áp suất là:
A. 123360 Pa B. 103360 Pa C. 20000 Pa D. 2000 Pa
2: Một con cá chuối đang bơi dưới hồ nước sâu 6m, con cá đang ở vị trí cách đáy hồ 1 m.
Khối lượng riêng của nước là 1000 kg/m 3 . Diện tích xung quanh con cá là 4 dm 2 . Áp lực nước gây
tác dụng lên con cá là:
A. 2400 Pa B. 240 Pa C. 2000 N D. 200 N
Lực ma sát làm mòn đĩa, líp và xích xe đạp. Khắc phục: thường xuyên tra dầu mỡ vào xích xe đạp