Differences in Earningsin the U.S. Today The typical physician earns about $200,000a year. The typical police officer earns about$50,000 a year. The typical farm worker earns about$20,000 a year

The Simple Pendulum A pendulum is made by suspending a mass m at the end of a string of length L Find the frequency of oscillation for small displacements mg

一、单项选择题 1 A 2 B 3 C 4 B 5 C 6 D 7 B 8 A 9 D 10 A 11 B 12 D 13 B 14 C 15 C

一、单项选择题 BC B D A B A A 二、多项选择题 ABCDAC BC AB BCDE BCDE AC ABCD ABE CDE

Milk should contain 8.25% milk-solid-not-fat .3.25% milk fat Milk is .. a true solution for salts, lactose, water- soluble vitamins milk is a colloidal dispersion for proteins and some Ca phosphate a dilute emulsion for fat globules

高等数学模拟试题(3) 一.填空题 1.若a与b垂直x为任意非零实数,则|a+bx与|a中较大者为 2.设上

一、发音规则 [a:] a,ah, aa 发音时口张大,下颚自然下垂,舌尖轻抵下门齿,声音自然从口中发出 [a]a 开口较[a]小,发音短促有力 [e: e, eh, ee 发音时双唇微张,开口度较a小,舌尖抵下齿,舌部稍微上抬 ]e,a 双唇稍大于发长音时,舌尖抵下齿,舌部稍低于长音 ]a,ah 舌位同e但开口度较大,且送气

1. Unit 1 Life and logic Text A Love and logic: The story of a fallacy 2. Unit 2 Secrets to beauty Text A The confusing pursuit of beauty 3. Unit 3 Being entrepreneurial Text A Fred Smith and FedEx: The vision that changed the world 4. Unit 4 Nature: To worship or to conquer Text A Achieving sustainable environmentalism 5. Unit 5 Why culture counts Text A Speaking Chinese in America 6. Unit 6 Gender equality Text A The weight men carry 7. Unit 7 Energy and food crises Text A The coming energy crisis

P17倒数第7行:ACB-+ACB P21(2.3)式-+ P(A:n41)=P(4)P(A),1≤i,≤N且≠j P(A∩A∩Ak)=P(4)P(A)P(A),1≤i,j,k≤N且互异 P(A1nA2…∩AN)=P(41)P(A2)…P(AN) P28倒数第7行:即若--+即

6.1.1(单项选择)若f(x)=1,则[dx=()(难度:A;水平:a) A.1 B.a-b C.b-a D.0 6.1.2(单项选择)∫f(x)dx(难度:A;水平:a) A.大于0B.小于0C.等于0D.不能确定