một máy biến áp lí tưởng có cuộn sơ cấp là 660 vòng dây với điện áp là 220v. nối hai đầu cuộn thứ cấp với số vòng dây 330 vòng . vậy giá trị điện áp hiệu dung giữa hai đầu cuộn thứ cấp khi biến áp hoạt động không tải là bao nhiêu

Exercise 1: Write the correct form or tense of the verbs in brackets 1. She ______________ (have) a sore throat, and she ______________ (cough) terribly now. 2. You should try ______________ (exercise) a couple times a week. 3. He keeps ______________ (sneeze), so I think he’s got a cold. 4. What ______________ (you/ do) tomorrow evening? 5. My mother doesn’t like ______________(eat) fast food. Exercise 2: Write sentences, using the words given. 1. Phong/ eat/ lots of/ junk food/ so/ he/ putting/ weight. _______________________________ 2. I/ exercise/ daily/ because/ I/ want/ stay/ healthy. _______________________________ 3. Sitting/ too/ close/ the TV/ hurt/ your eyes. _______________________________

Đang gấp ạ . Giúp em với đang đang gấp lắm ạ

21. They have given Tom a present. _____________________________ 22. Does Mr. Green often take them to the cinema on Sundays? _______________________________ 23. Do they hold a meeting every month? ______________________________ 24. The weather has turned all the leaves yellow. _______________________________ 25. People play football all over the world. ________________________________ 26. People speak French and English in Canada. ___________________________________ chuyển sang câu bị đọng giúp mk nha mng

cách đổi phông chữ trong máy tính

Giải giúp mình mấy câu trắc nghiệm với

Bruhh có thể làm được bao nhiêu thì lm

(x^3-1).(x+5)-(x+5).(x^3+1) rút gọn cách giải

Giúp mình với, nhớ thêm câu giải thích cho từng đáp án nha

III. Combine each pair of sentences into one, using a relative clause. Some clauses need commas, some do not: (1. 5p) 1. This is a newspaper. I want you to buy it. 2. Have you ever spoken to the people? They live next door. 3. It’s the book. It will interest children of all ages. 4. The Pikes keep having all-night parties. They live next door. 5. Where are the eggs? They are in the fridge. 6. People live longer. They take physical exercise. 7. Have you got something? It will get ink out of the carpet. 8. Tom and Peter didn’t come. They were invited. 9. Paris is the city. I’ve always wanted to visit it. 10. Mrs. White has just had her second baby. She’s been married for 4 years. 11. I bought a new typewriter. It cost me a lot of money. 12. Tom is one of my closest friends. He is very intelligent. 13. That woman over there is a singer. She is talking with your father. 14. I went to see a doctor. She saved the life of my son. 15. She looked up at the stars. They were twinkling in the sky now.