Vẽ sơ đồ mạch điện gồm hai cầu chì một ổ cắm một công tắc ba cực một công tắc hai cực điều khiển động cắt hai đến em hãy vẽ sơ đồ lắp đặt của mạch điện đó vào khung trống dưới đây

cho a,b,c > 0 và a+b+c=1. Chứng minh :

Xem lại r giúp e làm mấy câu e chưa vẽ với ạ, e cần gấp

phân tích vai trò của kinh doanh đối với sự phát triển của đất nước Giúp e với ạ !!

Vẽ anime mệt mỏi nhé Mai lại thi nx r

II. Read the text, and answer the questions. First Vietnamese-American Astronaut Born in Saigon and raised in Paris, Trinh Huu Chau (later Eugene H. Trinh) moved to France with his family in 1952 when he was only two. In his teenager years,Dr. Trinh attended Lycee Michelet in Paris. There, he focused on maths and science, because like many teens at that time, he wanted to become a pilot. Dr. Trinh left Paris for New York to attend Columbia University in 1968. Upon finishing his Bachelor of Science degree in 1972, he pursued his Master degree in 1974, and Doctorate in 1977 from Yale University. He spent 20 years at California Institute of Technology as a physicist carrying out research primarily in the fields of Fluid Physics and Applied Acoustics. By 1999, he worked as a Senior Executive, and focused on various science projects for NASA. Over the years, he has worked on a dozen of space-based flight investigations and the Space Shuttle, and ultimately flew aboard the Shuttle Columbia in 1992. Dr. Eugene H. Trinh never expected that he would make history as the first Vietnamese-American physicist to fly aboard NASA Space Shuttle Columbia mission STS-50 in 1992. “The sight and sounds of the space shuttle always brings back a rush of great memories of good friends, and the excitement of the past youth,” said Dr. Trinh. 1. When and where was Dr. Eugene H. Trinh born? ________________________________________________________________________________ 2. What was his childhood dream? ________________________________________________________________________________ 3. What did he do at California Institute of Technology? ________________________________________________________________________________ ________________________________________________________________________________ 4. What was his job in NASA? ________________________________________________________________________________ ________________________________________________________________________________ 5. When did he become the first Vietnamese-American astronaut? ________________________________________________________________________________ ________________________________________________________________________________ 6. What was the meaning of the sight and sounds of the space shuttle to him?

Viết đoan văn về nôin dung của văn bản chiếu dời doo

1 The Earth...revolves around the sun A. never B often C always D. usually 2. I... the report yet A. completed B. hasn't completed C. have completed D. have already completed 3. we (have).. dinner in our favorite Italian restaurant last night A. having B. are having C, had D. have 4.Man.. great things since 1990s A. is accomplished B. has been accomplishing C. has accomplished D. have accomplished 5. My grandmother's 92 years old. She cannot.. very well A. turn off B. buy C. think D. Hear 6. I...water A. drink so many B. drink quite C. don't drink many D. don't drink much 7. "...." I'm skipping rope A. what do you do B. how are you doing C. how are you D. what are you going 8. ....fly a plane? A. would you like to B. do you like C. you'd like D. you would like 9. Daisy...that novel several times A. is reading B. have read C. has been read D. has read

Viết đoạn văn 200 chữ về sức mạnh của niềm tin.

Trên cùng một nửa mặt phẳng bờ chứa tia Ox, vẽ các tia Ot, Oz, Oy sao cho góc xOy = 40°, góc xOz=60°, góc xOy=80° a) Tính số đo góc yOz b) Tia ot có phải là tia phân giác của góc xOy không? c) Vẽ điểm A nằm trên tia Ox(A khác O), điểm B nằm trên tia Oy (B khác O), vẽ đường thẳng AB cắt tia Ot tại điểm M. Trên tia đối của tia BA lấy điểm C (C khác B) . Chứng minh 2 góc COM bằng góc AOC + góc BOC