... B C 1, D 2, E 1, 2, Câu 4: Giữa b n kính hạt nhân (R) số khối nguyên tử (A) có mối liên hệ nh sau: R = 1, 5 .10 -13 A1/3 cm Khối lợng riêng hạt nhân (tấn/cm3) A 11 6 .10 6 B 10 6 .10 3 C 0 ,11 6 .10 6 D 11 ,6 .10 6 ... 43,76 B 20,83 C 10 , 41 D 48,62 E Kết khác Câu 76: 16 17 18 Trong tự nhiên, oxi có đồng vị b n là: O , O , O ; cacbon có đồng vị b n 12 C , 13 C Số phân tử khí cacbonic tạo là: A B 12 C 18 D 24 ... với < /b> lợng clorua vôi kĩ thu< /b> t Độ clo hoạt động lí thuyết clorua vôichứa 10 0% CaOCl tinh khiết (%) A 40 B 56 C 60 D 35 E Kết khác Khi cho 12 ,5g clorua vôi kĩ thu< /b> t tác < /b> dụng < /b> với < /b> axit HCl < /b> đặc, thu...
... m1 m2 d F = 10 .0 nN W1 = m1 g W2 = m2 g W1 W1 = 78.5 N W2 = 11 8 N = 7.85 × 10 W2 F = 1. 18 × 10 F 10 Problem 1- 17 Using the base units of the SI system, show that F = G(m1m2)/r2 is a dimensionally ... (a) a 1 /b1 , (b) a 2b2 /c2, (c) a 3b3 Units Used: μm = 10 −6 m Mm = 10 m Mg = 10 gm kg = 10 gm −3 ms = 10 s Given: a1 = 684 μm b1 = 43 ms a2 = 28 ms b2 = 0.0458 Mm c2 = 348 mg a3 = 2.68 mm b3 = 426 ... γ − α ) F1 sin ( 18 0 deg − γ ) sin ( γ − α ) F 1u = F1 sin ( 18 0 deg − γ ) F 1u = 205 N F 1v sin ( α ) = F 1v = F F1 sin ( 18 0 deg − γ ) sin ( α ) sin ( 18 0 deg − γ ) F 1v = 16 0 N Problem 2-6...
... Status3,4,5 HBV 0.8 1. 4 About 65% 3,000 Yes Birth, blood, sex million 2% HCV 2.7–3.9 About 75% 12 ,000 No Birth, blood, sex combined million HIV/AIDS 1.1 million About 21% 14 , 016 No Birth, blood, sex 69% ... C 16 TABLE 1- 2 Burden of Selected Serious Chronic Viral Infections in the United States . 21 TABLE 4 -1 Hepatitis B Vaccine Schedules for Newborns, by Maternal HBsAg Status 93 TABLE 4-2 ... Diseases 18 6 (11 ) :15 58 -15 64 Hauri, A M., G L Armstrong, and Y J Hutin 2004 The global burden of disease attributable to contaminated injections given in health care settings Int J STD AIDS 15 (1) :7 -16 ...
... infants born to mothers who have hepatitis B receive a first dose of the hepatitis B vaccine within 12 hours of birth Despite the ACIP recommendation, first doses of the vaccine are being missed ... or body fluids, and from travel to regions with high or intermediate levels of endemic HBV infection) receive the hepatitis B vaccine To prevent transmission of HBV from mothers to their newborns, ... hepatitis B and hepatitis C are important public health problems and that there are several barriers to prevention and control efforts, such as a lack of knowledge and awareness about chronic...
... chất tính chất ? Nếu a + c = b + c a =b Nếu a + c = b + c a = b Nếu a = b b=a - Đổi chỗ hai đĩa cân cho tính chất ? II.- Ví dụ : - Từ ví dụ Gv hướng - Học sinh làm ? dẫn cho học sinh thấy không ... sinh tìm tính chất Nếu a = b a + c = bb sau thêm hai cân trọng lương vào + c Nếu a = b a + c = b + c hai đĩa cân (gọi vật c) học sinh quan sát xem cân - Lấy hai vật vừa b vào khỏi có cân không ... 3./ B i : Giáo viên Học sinh - GV đặt vào hai đĩa cân I - Tính chất đẳng thức vật dụng < /b> khác cho cân cân ,gọi vật dụng < /b> đĩa cân a B i ghi - Khi biến đổi đẳng thức ,ta thường áp dụng < /b> tính...
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... none a 41 Tam said that many roads were in Danang city a been built b being built c building d been building b 42 My boss needs a person with a good working of Chinese a knowledge b quotation ... b abolish c police d policy c a mate b water c stake d place b a though b cough c although d soul b a teacher b break c meal d peak b a blank b stand c enhance d hand c a form b work c born ... occurs b lighter c cools d it c 10 Under the crust of the Earth are bubbling hot liquids that sometime rise to the surface a bubbling b liquids c sometime d to c Grammar and Vocabulary 11 His...
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... industrial countries a has b as c other d countries > b 2 21 Before the invention of the printing press, books have been all printed by hand a Before b the printing c have been d by > c 222 As the Asian ... dream that she was being carried away by monsters a dreamed b a dream c was being carried d by > b 252 It had been a long winter, but at last it was nearly across a had been b but c nearly d across ... they had been watching the news on T.V a Before b had gone c had been watching d on > b 268 She never wrote a letter by hand since she bought a word processor a wrote b by c since d bought >...
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