第七章刚体的简单运动 7.1已知OA=0.1m,R=0.1m,角速度w=4rad/s; 求导杆BC的运动规律以及 y 当=30°时BC杆的速度v和加速 度a。 解BC杆直线平动,用点O1

《模拟电路课程设计》任务书 一、设计课题:OCL或OTL功率放大电路 二、主要技术指标 1、额定输出功率Po≥6W 2、负载阻抗RL=8 3、失真度≤3%

Uint I. Basic listening Practice 1. Script M: Third World countries must improve their economies if they want to raise their W: But how can they do that when developed countries control world trade? Q: Which of the following is true?

Uint8 Ⅱ. Listening skills Listening for Rents or Charges 1. M: Look at this ad! \ One bedroom apartment, with kitchen and bathroom. \ It's close to our school, and the price is only $250 a month W: But I want an apartment at least $50 cheaper Q: What is the highest rent the woman is willing to pay? B)$200

Uint10 I. Basic listening Practice 1. Script W: Many Chinese students are too shy to say anything in a classroom M: I think they dont speak because their culture values modesty, and they dont want to appear to be showing off. Goes back to Confucius

Basic listening Practice 1. Script W: Let me recommend my brother to you. He's really done well in the stock market over the last M: The real question is this: How have you dine by taking his advice Q: What does the man mean?

Uint I. Basic listening practice 1. Script M: We offer all kinds of tours and excursions. do you have anything particular in W: Not really, we'd just like to see the local sights and have an English speaking guide. It would be good if they were someone local too. My husband is interested in the local stories and folklore

Ⅱ. Listening skills Understanding Times and dates w: Oh, look at the clock It's 5: 15. I'll be late for Jennifer's birthday party! I was supposed to leave at 5 o'clock M: Don't worry! You still have some time. The clock is twenty minutes fast Q What time is it now?

Unit 6 I. Basic listening practice 1. Script W: Are those cigarettes yours? I thought you quit. If you go back to it, your teeth and fingers will be nicotine-Stained; your breath and clothes will smell smoky M: I didnt. I swear. Ads showing diseased lungs kept me from starting again. Believe

Into I. Basic listening practice 1. Script w: What's that? Is it a toy? Did it get chewed by a dog? M: Hey, that s my mascot! My uncle gave it to me when I was five, and it's been with me ever since. It brought me luck in all my college exams. I can t bring myself to