Khi máy bơm nước hoạt động, dòng điện xoay chiều chạy trong máy bơm gây ra những tác dụng gì

nguyên nhân và các biện pháp phòng tránh các bệnh ngoài da

Các bạn giúp mình giải với ạ! Thì hiện tại đơn Cảm ơn các bạn rất nhiều ạ

Hãy phân tích hình tượng nhân vật Tràng trong tác phẩm Vợ nhặt của Kim Lân. Giúp mình vs ạ. Mình đang cần gấp huhu

Tìm giá trị lớn nhất của $\frac{căn x}{x-căn x+1}$

Giúp mik v thankiu 😍😘😘😘😘😘

EXERCISE 3 : BỊ ĐỘNG VỚI NHỮNG ĐỘNG TỪ KHUYẾT THIẾU . 1. You should open the wine about three hours before you use it. 2. You must not hammer nails into the walls without permission. 3. People must not leave bicycles in the hall. 4. Members can keep books for three weeks. 5. People should send their complaints to the main office. 6. You must turn off all the switches before leaving the room. 7. You must make an appointment in advance . 8. Someone might steal the car . 9. you must keep the room tidy . 10. They can’t solve the problem . 11. We can’t restore the picture. EXERCISE 5 : BỊ ĐỘNG VỚI NHỮNG ĐỘNG TỪ SAI BẢO. 1.I had my nephew paint the gate last week. 2.She will have Peter wash her car tomorrow. 3.They have her tell the story again. 4.John gets his sister to clean his shirt. 5.Anne had had a friend type her composition. 6.Rick will have a barber cut his hair. 7.I will get the dressmaker to make a new dress. 8.He had a mechanic repair his car. 9.She often gets the technician to maintain the heater. 10.They had the police arrest the shoplifter. 11.Are you going to have the shoemaker repair your shoes? 12.I must have the dentist check my teeth. 13.She will have a veterinary surgeon examine her dog. 14.We had a man take this photograph when we were on holiday last summer. 15.The Greens had a carpet cleaner clean their carpet. 16. We had them repair our car. 17. Lan got his brother to clean the windows last week. 18. I have the hairdresser cut my hair. 19. Jill got the tailor to make her new dress.

tính lim(√n+ ∛n+1)/√(n+1). Cảm ơn ạ

EXERCISE 1:. ( THÌ CƠ BẢN ) 1.My father waters this flower every morning. 2.John invited Fiona to his birthday party last night. 3.Her mother is preparing the dinner in the kitchen. 4.We should clean our teeth twice a day. 5.Our teachers have explained the English grammar. 6.Some drunk drivers caused the accident in this city. 7.Tom will visit his parents next month. 8.The manager didn’t phone the secretary this morning. 9. Did Mary make this beautiful dress? 10.I won’t hang these old pictures in the living room. 11.The German didn’t build this factory during the Second World War. 12.The Greens are going to paint this house and these cars for Christmas Day. 13.Ann had fed the cats before she went to the cinema. 14.The students have discussed the pollution problems since last week. 15.Have the thieves stolen the most valuable painting in the national museum? 16.Some people will interview the new president on TV. 17.How many languages do they speak in Canada? 18.Are you going to repair those shoes? 19.He has broken his nose in a football match. 20.Have you finished the above sentences? EXERCISE 2 ( THÌ CƠ BẢN ) 1.The waiter brings me this dish. 2.Our friends send these postcards to us. 3.Their grandmother told them this story when they visited her last week. 4.Tim ordered this train ticket for his mother. 5.You didn’t show me the special cameras. 6.She showed her ticket to the airline agent. 7.He lends his friend his new shoes. 8.She left her relatives five million pounds. 9.The shop assistant handed these boxes to the customer. 10.The board awarded the first prize to the reporter. 11.Have you sent the christmas cards to your family? 12.The committee appointed Alice secretary for the meeting. 13.He hides the broken cup in the drawer. 14.They keep this room tidy all the time. 15.They all voted the party a great success. 16.We gave Ann some bananas and some flowers. 17.They moved the fridge into the living room. 18.She bought some cups of tea to the visitors in the next room. 19.They find the new project worthless. 20.The secretary didn’t take the note to the manager. 21. They are going to clear those slums. 22. They are going to mend the roof tomorrow morning. 23. The farmer is going to enlarge the farm. 24. She is going to buy a cookery book next month. 25. Someone is going to serve Jack breakfast in bed on his birthday

H2->HCl->Cl2->FeCl2->Fe(NO3)2->Fe(OH)2->FeSO4->FeCl2->AgNO3.