Người ta dự định đun sôi 1 lít nước có nhiệt độ ban đầu 30oC bằng ấm điện hoạt động bình thường có công suất 900W. Công suất hao phí khi đun nước phụ thuộc thời gian theo đồ thị như hình 1. Tính thời gian dự định đun sôi nước? Biết nhiệt dung riêng của nước là 4200J/kg.K.
Xét dấu tam thức bậc hai sau : h(x)= x^2 -4x +4
Tìm nghiệm tổng quát của pt 3x+2y=4 và biểu diễn tập nghiệm của nó trên mặt phẳng toạ độ
Không tính kết quả , hãy so sánh 1) (-23).5 và 0 2) (-6).20 và -6 3) 14.(-16)và 14.16 4)(-31).12 và (-12).34
GẤP Ạ Reduce these relative clauses into participles or to-infinitives 5. Much of this region, which was once covered by forest, is now bare of trees. 6. People who listen to very loud music may suffer gradual hearing loss. 7. The vegetables which are sold in this supermarket are grown without chemicals. 8. This is the book that you can read on long Night. 9. Yuri became the first man that traveled in space. 10. The only thing that we can do now is wait and see. 11. The Honda Civic is the best car that you should rent for your trip. 12. The noise which comes from the boat engine might disturb sea animals. 13. Animals that are born in zoos know nothing about life in the forests. 14. The governments of many countries are discussing methods that can protect the environment. 15. The woman who is standing over there is my sister.
Tìm x, biết a) x-(+3)=-17 b)|x|=11 c) |x+6|=7 d) -7+|x-4|=(-8)+12
Mấy bạn giỏi tiếng anh jup mik với Mik sẽ vote 5 Sao cho bn tl nhanh nhất và cảm ơn
Giúp mik trả lời câu hỏi này với ạ
ai giúp mình bài 1 bên dưới với ạ cần chính xác và trình bày đàng hoàng thôi ạ
1. The villagers are trying to learn English _____ they can communicate with foreign customers. A. so that B. in order that C. although D. A and B are correct 2. I’ve been to a _____ village in Hue! A. conical hat making B. making conical hat C. making conical hats D.hat making conical 3. _____ we had eaten lunch, we went to Non Nuoc marble village to buy some souvenirs. A. After B. Before C. By the time D. Because 4. Do you think that the various crafts remind people _____ a specific region? A. about B. of C. for D. at 5. _____ this hand-embroidered picture was expensive, we bought it. A. As B. Because C. Even though D. so that 6. Conical hat making in the village has been passed _____ from generation to generation A. on B. down C. up D.in 7. This department store is an attraction in my city _____ the products are of good quality. A. when B. because C. though D. 8. A conical hat is a well-known handicraft, not only in Viet Nam, _____ all around the world. A. and B. but C. so D. or 9. This is called a Chuong conical hat _____ it was made in Chuong village. A. but B. so C. since D. because of 10. They can’t because we have lots of products. They make some and other people make__________. A. the rest B. the last C. the other D. others 11. I look forward to _____ you soon. A. see B. seeing C. seen D. saw 12. It’s a nice place for _____ who love nature and quietness. A. this B. that C. those D. the other 13. You like history, so Viet Nam National Museum of History is a _____ place. A. must-see B. must-be seen C. must-be seeing D. to see 14. The artisan ______ this statue in bronze. A. moulded B. cast C. carved D. knitted 15. The artisans in my village can live _____ basket weaving. A. for B. on C. up D.in 16. There is a big _____of handicrafts made by di¬fferent craft villages. A. collect B. collection C. collector D.collecting 17. Last week we had a memorable trip to a new zoo on the ______ of the city. A. outskirts B. middle C. centre D.mid 18. Then we had a delicious lunch ______ by Nga and Phuong. A. prepare B. to prepare C. prepared D.preparing 19. I invited her to join our trip to Trang An, but she ______ down my invitation. A. passed B. sat C. turned D.closed 20. We have to try harder so that our handicrafts can keep _____ theirs. A. on B. up C. up with D.up down 21. The flower was _______ out of a single piece of valuable wood. A. carved B. moulded C. cast D. given 22. In this town, they _______ all the frames in steel. A. make B. have C. mould D. cast 23. She is skilled at_______ cloth. A. giving B. carving C. doing D. weaving 24. We didn’t go camping yesterday _________ it rained heavily. A. because B. although C. despite D. In spite of 25.I wish I _________ his name. A. knew B. know C.will know D. would know 26. If you like , I can _______ flowers on the cushion covers for you. A. embroider B. make C.grow D. knit 27. Please turn _______ the light when you leave the room. A. on B. off C.up D. down 28.It is true that you _______ this woollen hat yourself ? A. wove B. knitted C.did D. carved 29. I love going to this place______it's the quietest place in the city, A. so B. though C. so that D. as 30. They keep changing the decoration of the shop ______they can attract more young people. A. so that B. because C. although D. when
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