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Daihoc2018
1 năm trước
Máy xoay chiều có các bộ phận chính nào? Để giảm hao phí điện năng do tỏa nhiệt trên đương dây tải điện thì tốt nhất bằng cách nào ? Viết công thức tính công thức hao phí
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Các câu hỏi liên quan

#mn giúp mình vs ạ Câu 1: He would come back home if he ( have ) time Câu 2: They ( know) this answer until now. Câu 3: While he was walking, they ( meet) the old man. Câu 4: The boys are understood ( dance) every day. Câu 5: She is the most intelligent girl ( answer) my question. Câu 6: The old man ( stop) here last night is a doctor. Câu 7: She is lazy,...................? A. is she B. isn't she C. does she D. doesn't she Câu 8 : If she .........free time, she may go out A. have B. had C. has Will have Câu 9 : The doctor has a lot of money. He comes from England. (Relative clause) Câu 10 : The man about ...................I talked last night is a new comer. A. which B. that C. whom D. who Câu 11 : they didn't write the letter, so we got angry. (If) Câu 12 : they saw my shop last week. ( Object focus) Câu 13 : They think the teacher broke my phone. ( the Teacher) Câu 14 : If / he / not / prepare / dinner / now/ he / have / some / problem. Câu 15 : The / boy / invite/ to / party / last week/ come / back / yesterday. Câu 16 : Many organizations have been( set up) and funds have been raised. A. established B. collapsed C. delayed D. decreased Câu 17 : While they ______ chess, we __________ the shopping. A. playing/doing B. played/did C. were playing/doing D. were playing/ were doing Câu 18 : He __________ in the same house since 1975. A. has lived B. is living C. lived D. had lived Câu 19 : Many teachers would like to be more adventurous and ___________. (create) A. creating B. creative C. creation D. created Câu 20 : The government always encourages the ______________ of small businesses. (develop)

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