bai tap tieng anh 12 unit 14 co dap an

... (A1 cos + A cos + + A n cos n )2 Pha ban đầu: A1 sin + A sin + + A n sin n , A A cos + A cos + + A n cos n cos = A A1 sin + A sin + + A n sin n tan = A1 cos + A cos + + A n cos n sin ... gian từ trờng, sinh không gian xung quanh điện trờng xoáy biến thiên theo thời gian, ngợc lại, biến thiên theo thời gian điện trờng sinh từ trờng biến thiên theo thời gian không gian xung quanh ... 100D 101B 102D 103C 104C 105D 106A 107D 108B 109A 110D 111D 113C 114D 115B 116D 117C 118B 119D 120 C 121 B 122 A 123 A 124 D 125 A 126 D 127 C Hớng dẫn giải trả lời chơng 2.1 Chọn B Hớng dẫn: Vật dao động...

Ngày tải lên: 18/10/2015, 16:36

... A encourage B is encouraged C are encouraged D encouraged 138 Education _ to be the most important element to develop a country A often be considered B can often consider C can often considered ... intelligent computer 120 A property activity 121 A business militant 122 A scholarship outnumber 123 A encounter tendency 124 A different fertilizer 125 A obstacle disappoint 126 A satisfied expected 127 ... A encourage B is encouraged C are encouraged D encouraged 340 Education _ to be the most important element to develop a country A often be considered B can often consider C can often considered...

Ngày tải lên: 11/07/2015, 21:19

... community B communication C compassionate D competition 21 Phil: You really have a beautiful dress, Maggie! Maggie: Thanks Phil That’s a nice _ A complexion B comfortable C compliment D completion ... community B communication C compassionate D competition 86 Phil: You really have a beautiful dress, Maggie! Maggie: Thanks Phil That’s a nice _ A complexion B comfortable C compliment D completion ... “How many people are there in your family?”, he asked Lan A He asked Lan how many people are there in my family B He asked Lan how many people there are in my family C He asked Lan how many people...

Ngày tải lên: 11/07/2015, 21:19

... precede it A B C D Americans and Asians have the same ideas about love and marriage A B C D Young Americans are much more romantic as their Asian counterparts A B C D A romantic marriage is the ... attitudes on love and marriage A B C D 11 Asian students don’t agree that a husband should share all thought to his wife A B C D 12 The Asian wife can demand a records of her husband’s activities ... it A B C D 26 Americans and Asians have the same ideas about love and marriage A B C D 27 Young Americans are much more romantic as their Asian counterparts A B C D 28 A romantic marriage is the...

Ngày tải lên: 11/07/2015, 21:19

... family is the base from which we can go into the world with _ A confide B confidence C confident D confiding 33 I like doing _such as cooking, washing and cleaning the house A house-keeper ... researches with animals and plants A botanist B biologist C chemist D mathematician 35 In my family, both my parents _to give us a nice house and a happy home A join hands B get out C shake hands D ... I thought as though he hasn't eaten anything A B C D 12 Lan wished she had pass the exanimation A B C D 13 After he come home, he continued going A B C D 14 I doubted as if she leave home A B...

Ngày tải lên: 11/07/2015, 21:19

... for a construction company in _ A Manchester, which is a city in England B Manchester, that is a city in England C Manchester is a city in England D Manchester where is a city in England 100 ... for a construction company in _ A Manchester, which is a city in England B Manchester, that is a city in England C Manchester is a city in England D Manchester where is a city in England 200 ... practice? A Asking and answering questions related to the job B Making products that the company produces C Providing services that the company serves D Meeting some customers and competitors 274...

Ngày tải lên: 11/07/2015, 21:19

... chance to learn how some of their favorite dishes makings (made) 35 Playing games together is teachable moments to share lessons about sportsmanship, teamwork, perseverance, and to be tolerant ... to be tolerant of others (being) Read the passage carefully and choose the correct answer Jean spent her first few years in Hooper and her family moved to Otsego early in her life She was only ... home, Jean thoroughly enjoyed school and was an excellent student She went on to graduate 10th in her class at Otsego High School in 1953 While still in high school, Jean met a young man named...

Ngày tải lên: 27/07/2015, 10:31

... where animals or plants are normally found B The place where animals or plants can drink and sleep C The place where animals or plants can eat find their enemy D The place where animals can find and ... capital Iran puts a thin covering of petroleum on sandy areas and plants trees The oil keeps the water and small in the land, and men on motorcycles keep the sheep and goats away Other countries ... GNVQ in? A German Literature B Business C Art and Design D Manufacturing 45 Pupils normally study for their GCSE between the ages of _ A 12 and 14 B 14 and 16 C 15 and 17 D 16 and 18 Choose...

Ngày tải lên: 27/07/2015, 10:32

... indicate the correct answer to each of the following questions: Page THE FIRST SEMESTER Grade 12 UNIT 4: SCHOOL EDUCATION SYSTEM The American education system requires that students complete 12 years ... ministers and leaders from other countries have experienced the American education system and graduated from a university or school in the USA In many fields and industries, the American education ... from an accredited American school and being exposed to the rigors of the American education system is an investment in your future Whether you want to study at a top USA university, a top USA college,...

Ngày tải lên: 27/07/2015, 10:48

... hỗn hợp ban đầu 100g => m Al2O3 = 10,2g ;; => m CaCO3 = 80g PTHH : CaCO3  CaO + CO2 Độ giảm khối lượng = 100 – 67 = 33g mCO2 => nCO2 = 33 : 44 = 0,75 mol Theo PT : n CaCO3 phản ứng = nCO2 = 0,75mol ... phản ứng = nCO2 = 0,75mol ⇒ m CaCO3 pư = 75g ; m CaCO3 dư = 5g =>Chất rắn gồm : m Al2O3 = 10,2g ; m Fe2O3 = 9,8g ; m CaCO3 dư = 5g ; mCaO = 0,75.56 = 42g Bài t an giải qui 100 Bài tập : Cho m1 ... Bài t an giải qui 100  Bài tập : Có hỗn hợp gồm Al2O3 , Fe2O3 CaCO3 Al2O3 chiếm 10,2% , Fe2O3 chiếm 9,8% Đem nung hỗn hợp nhiệt độ cao thu chất rắn có khối lượng 67% khối lượng hỗn hợp ban đầu...

Ngày tải lên: 03/06/2013, 01:25

... England 4.That officer announced that the meeting was delayed until next week 5.He discovered that this cotton was grown in Egypt 6.They promise that the performance will start on time 7.He recommends ... the committee) 13.The broken cup is hidden in the drawer (by him) 14. This room is kept tidy (by them) all the time 15.The party was voted a great success(by them) 16.Ann was given some bananas and ... business trip to England 4.It was announced that the meeting was delayed until next week 5.It was discovered that this cotton was grown in Egypt 6.It is promised that the performance will start on...

Ngày tải lên: 29/08/2013, 22:10

... 11 Cho Tính theo m giá trị lớn giá trị nhỏ Từ tìm m sao Đặt Xét bảng biến thiên ta có: Bài 12 Giải phương trình: Phương trình cho tương đương với: Bài 13 Giải phương trình : ...

Ngày tải lên: 20/09/2013, 19:10

... studies A completes B will complete C are completing D will have completed 28.Right now, Jim the newspaper and Kathy dinner A reads / has cooked B is reading / is cooking C has read / was cooking ... 12. Whenever problems comeup, we discuss them frankly and find solutions quickly A happen B encounter C arrive D clean 13.What are the _ of that country? - I think it is some kinds of cheese and ... studies A completes B will complete C are completing D will have completed 28.Right now, Jim the newspaper and Kathy dinner A reads / has cooked B is reading / is cooking C has read / was cooking...

Ngày tải lên: 09/10/2013, 02:50

... meeting, it's important to follow the agenda and not interrupt (48) speaker If you give a presentation, you should focus (49) facts and technical information and the quality of your company's products ... meeting, it's important to follow the agenda and not interrupt (48) speaker If you give a presentation, you should focus (49) facts and technical information and the quality of your company's products ... anybody, my aunt normally _ A feels embarrassed and stays away from people B asks people to introduces themselves to her C comes over to the first person and introduces herself D sits alone and...

Ngày tải lên: 09/10/2013, 03:03

... thức: P = 14 +6 + 14 2) Cho biểu thức : Q= = ( +1) ( +1)( 1) x +2 x x + x + x a) Chứng minh : Q = x +1 x x với x > x b) Tỡm số nguyên x lớn để Q có giá trị số nguyên Gii : Cõu 1) 14 +6 ... ( x 1) > x + x +1 x ( x 1) > A> Bài 21 : Ta có A2 = + 3 + 3 + ( + 3 ) ( 3 ) = 12 + ( 62 3 ) = = 12 + ì = 18 A = (vì A > 0) ( B= = )( 5+2 52 11 11 ) 52 11 ( 52 6) ( = 11 =1 Bài 22 ... Thay x= 3+2 Bai 6: KX: vào ta có P = 3+2 + 2 = 1+ 2+ = a 0; a a a 2( a 3) a + a a 2( a 3) ( a + 3)( a + 1) = = a) M = ( a + 1)( a 3) ( a + 1)( a 3) a +1 a = a a 2a + 12 a 18 a...

Ngày tải lên: 03/12/2013, 22:11

... án kinh doanh 843 tr - NH quy định mức cho vay tối đa 70% TSĐB BG: NH đồng ý cho vay khi: Mức sinh lời > Lãi suất cho vay Mức sinh lời = [(DT – CP)/ CP] / thời gian bỏ vốn đầu tư Thờ gian bỏ vốn ... vay 2270 tr Thời gian cho vay = thời gian bỏ vốn đầu tư = tháng BÀI 3: Công ty A có nhu càu vay NH tỷ để thi công công trình trúng thầu (công trình đầu tư vốn ngân sách) Thời gian xin vay tháng, ... tr CP = 3885 + 975 + 128 + 2040 = 7028  Mức sinh lời = [(8040 -70280) / 7028] / = 0,36 = 3,6 % > 0,9%/tháng  Đồng ý cho vay Hạn mức cho vay Tổng CPSXKDCT = 3885 + 975 + 128 = 4988 tr Nhu cầu...

Ngày tải lên: 12/12/2013, 20:53

... cáp quang ? 11 Vai trò lớp sơn bọc (cladding) cáp quang? Cho biết chiết suất tương đối lõi ? 12 Trình bày ưu điểm quang so với dạng cáp đồng trục xoắn đôi ? 13 Khuyết điểm cáp quang ? 14 Cho ... nối dùng mạng: b Bán song công a LAN c Song công b MAN Biên dịch: Nguyễn Việt Hùng Trang Bài giảng: Truyền số liệu Chương 2: Ý niệm c WAN b Cây d Tất sai c Bus 12 Văn phòng công ty A có hai máy ... virtual terminal b file transfer, access, management c mail service d tất Trang 10 Bài giảng: Truyền số liệu Chương 3: Mô hình OSI III.BÀI TẬP: Biên dịch: Nguyễn Việt Hùng Trang 11 Bài giảng: Truyền...

Ngày tải lên: 15/01/2014, 12:57