sig ma
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Choose the word whose underlined part is pronounced differently from that of the rest.
1.A. reject B. collect C. lecture D. subject
2.A. low B. power C. row D. show
3.A. sight B. sign C. signature D. silence
4.A. sweater B. heat C. beat D. treat
5.A. nature B. exchange C. gravity D. patient
Make the correct choice
6. Nha Trang, a beautiful city belong to Khanh Hoa Province, is a .................. resort.
A. mountainous B. seaside C. village D. countryside
7. Nha Trang is famous for the lovely beaches where tourists can swim and .................. .
A. sunbathe B. lie in the sun C. sauna D. Both A and B.
8. You can go for a .................. tour round the city, enjoying its scenic view.
A. sightseeing B. boating C. sailing D. camping
9. For excursions you can go to the ......... Institute, where you can see many kind of marine creatures.
A. Ocean B. Sea C. Oceanic D. Sea-board
10. Tourists can visit ......islands where they can go scuba diving or just enjoy the natural scenery.
A. inshore B. offshore C. inside D. outside
11. For transport, there are flights .................. to Ho Chi Minh city, except Monday.
A. weekly B. monthly C. daily D. hourly
12. By land, there are trains and buses to northern and southern .................. .
A. destinations B. departures C. arrivals D. parting
13. To serve you stay, there are some small, good .................. there.
A. flats B. houses C. palaces D. hotels
14. A three-day tour round Nha Trang will be a(n) .................. holiday.
A. forget B. forgettable C. unforgettable D. remembering
15. My hometown is not an exciting place. The night-life there is pretty .................. .
A. good B. interesting C. noisy D. quiet
Choose the word whose underlined part is pronounced differently from that of the rest.
1.A. reject B. collect C. lecture D. subject
2.A. low B. power C. row D. show
3.A. sight B. sign C. signature D. silence
4.A. sweater B. heat C. beat D. treat
5.A. nature B. exchange C. gravity D. patient
Make the correct choice
6. Nha Trang, a beautiful city belong to Khanh Hoa Province, is a .................. resort.
A. mountainous B. seaside C. village D. countryside
7. Nha Trang is famous for the lovely beaches where tourists can swim and .................. .
A. sunbathe B. lie in the sun C. sauna D. Both A and B.
8. You can go for a .................. tour round the city, enjoying its scenic view.
A. sightseeing B. boating C. sailing D. camping
9. For excursions you can go to the ......... Institute, where you can see many kind of marine creatures.
A. Ocean B. Sea C. Oceanic D. Sea-board
10. Tourists can visit ......islands where they can go scuba diving or just enjoy the natural scenery.
A. inshore B. offshore C. inside D. outside
11. For transport, there are flights .................. to Ho Chi Minh city, except Monday.
A. weekly B. monthly C. daily D. hourly
12. By land, there are trains and buses to northern and southern .................. .
A. destinations B. departures C. arrivals D. parting
13. To serve you stay, there are some small, good .................. there.
A. flats B. houses C. palaces D. hotels
14. A three-day tour round Nha Trang will be a(n) .................. holiday.
A. forget B. forgettable C. unforgettable D. remembering
15. My hometown is not an exciting place. The night-life there is pretty .................. .
A. good B. interesting C. noisy D. quiet
Artists who (24) draw pictures on the pavement with chalk used to be very common sight in London, but there (25) are only a few left now. Sometimes the pictures are very good. This is proved by the fact that one of the (26) artists' favourite tricks is to draw a five-pound note and see a lot of people trying to (27) pick it up. The police usually trick pavement artists kindly and there is nothing in the law against drawing on the pavement (28) unless the artist is so good that he gets a large (29) crowd around him and this prevents other people from passing freely (30) along the street.
Câu 4: Chiếu một tia sáng từ bên trái hướng xuống gương phẳng sao cho góc tới bằng 40 độ. Hỏi góc tạo bởi tia tới và mặt gương phẳng (góc SIG) có giá trị bằng bao nhiêu?
A. 90 độ B. 75 độ C. 50 độ D. 30 độ
Câu 5: Tia sáng tới gương phẳng hợp với tia phản xạ một góc 90 độ. Hỏi góc tới có giá trị là bao nhiêu?
A. 90 độ B. 75 độ C. 60 độ D. 45 độ
Câu 6: Tia sáng tới gương phẳng hợp với mặt gương một góc 30 độ. Hỏi góc tới có giá trị là bao nhiêu?
A. 90 độ B. 75 độ C. 60 độ D. 45 độ
a. 4 A = 4000 mA 0,1 A = 100 mA 0,6 A = 600 mA
b. 1,2 A = 1200 mA 0,025 A = 25 mA 0,005= 5 mA
vì con quỷ giết con ma xanh con ma xanh chết mắt nó xanh con ma đỏ thấy ghê quá chết toi luôn
Vì giết xong con mà xanh con ma đỏ sợ quá biến thành mầu xanh và chết
1 lực ma sát trượt là cản trở chuyển động của vật còn lại thì k biết
120 mA = 0,12 A; 3500 mA = 3,5 A; 1540 mA = 1,54 A;
35 mA = 0,035 A; 9000 μA = 0,009 A 500 μA = 0,0005 A
tat ca cam mom scl scl