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JOWA ODME 2005

JOWA ODME 2005
JOWA ODME 2005

阿尔法智能机器人讲解

学人走路身体灵活 在17日召开的美国科学促进协会会议上,研究人员展示了他们的最新发明成果——新型步行机器人。相关研究报告将刊登在本周出版的《科学》杂志上。 新型机器人运用自己能弯曲的双脚和电动化脚踝带动双腿迈步,其双臂也会随着脚步的移动来回摆动保持身体平衡。 康奈尔大学研究人员安迪·鲁伊纳说新型步行机器人走路时一起一伏,使身体灵活运动,跟人没什么两样。鲁伊纳说“我们让它更多地注意动作。”而其动作就是孩子学走路时必须掌握的。因此,科学家们把此类机器人形象地称为“初学走路的孩子”。 任何路面行走自如 麻省理工学院科学家泰德拉克说,这种机器人内置多个传感器,使其“在20分钟内学会像人一样走路”。传感器能以每秒200次的速度测量机器人每个动作的倾斜度和速度,然而向其他电动机下达新指令来调节身体姿势。传感器还指示制动器控制机器人脚踝上弹簧的压力,使其整体平稳向前。 “每走一步,制动参数都会有所改变,”泰德拉克说,“机器人可以在任何路面上走路,并调节走路的姿势。” 实际上,新型机器人在沙滩、草地和人行道等不同路面上走路时,能像人一样改变步伐的大小。新型机器人还学会了在水车上走路,它配合水车倾斜度和速度的改变不断调节姿势。它可以自动启动,并会向后倒着走。 动力设计节省能量 众所周知,不换新电池的情况下,机器人用的能量越少,其操作时间越长。新型机器人最大的优点莫过于它非常节能。 科学家在发明新型机器人时,运用了“被动动力设计”的原理和装置,使机器人依靠重心的改变和类似肌肉的弹簧和电动机带动其走路。因此,此类机器人维持走路所需的能量仅仅相当于其他步行机器人的很小一部分。为此,鲁伊纳对学步机器人颇为自得。他说:“机

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2005年12月高等学校英语应用能力A级试题 Part I Listening Comprehension (15 minutes) Directions: This part is to test your listening ability. It consists of 3 sections. Section A Directions: This section is to test your ability to understand short dialogues. There are 5 recorded dialogues in it. After each dialogue, there is a recorded question. Both the dialogues and questions will be spoken only once. When you hear a question, you should decide on the correct answer from the 4 choices marked A, B, C and D given in your test paper. Then you should mark the corresponding letter on the Answer Sheet with a single line through the center. 1. A. In a post office. B. In a bank. C. In a big store. D. In a hotel. 2. A. He has a lot of experience. B. He appears to be a bit too quiet. C. He is nice-looking. D. He lacks experience. 3. A. Prepare a price list. B. Go to the Brown Company. C. Send a parcel by post. D. Mail a price list. 4. A. She should repair the telephone herself. B. She can turn to Mike for help. C. He knows nothing about telephone. D. He will call the telephone company. 5. A. Seeing a film. B. Attending an evening party. C. Having another try. D. Finding a better theater. Section B Directions: This section is to test your ability to understand short conversations. There are 2 recorded conversations in it. After each conversation, there are some recorded questions. Both the conversations and questions will be spoken two times. When you hear a question, you should decide on the correct answer from the 4 choices marked A, B, C and D given in your test paper. Then you should mark the corresponding letter on the Answer Sheet with a single line through the center. Conversation 1 6. A. In the office. B. In a factory. C. At the airport. D. At the railway station. 7. A. She was busy working. B. She was having a holiday. C. She wanted to get relaxed. D. She wanted to shop for Christmas. Conversation 2 8. A. To make an apology. B. To place an order. C. To ask about delivery. D. To cancel an appointment. 9. A. Trucks B. Printers C. Phones D. Cameras 10. A. For the late payment. B. For the damaged products. C. For the lost goods. D. For the delayed delivery. Section C Directions:This section is to test your ability to comprehend short passages. You will hear a recorded passage. After that you will hear five questions. Both the passage and the questions will be read two times. When you hear a question, you should complete the answer to it with a word or a short phrase (in not more than 3 words). The questions

2014年12月英语四级真题及答案

2014年12月英语四级真题及答案 Part I Writing Directions: For this part, you are allowed 30 minutes to write a short essay on the foll owing topic. You should write at least 120 words but no more than 180 words. 作文题一:印象最深的活动 AA campus activity that has benefited most. 作文题二:印象最深的课程 A course that has impressed you most in college. 作文题三:印象最深的同学 A classmate of yours who has influenced you most in college. Part II Listening Section A Directions:In this section,you will hear 8 short conversations and 2 lon g conversations. At the end of each conversation, one or more questions will b e asked about what was said. Both the conversation and the questions will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked A) , B) , C) and D),and decide wh ich is the best answer. Then mark the corresponding letter on Answer Sheet I with a single line through the centre. 1. A.The man is not good at balancing his budget. B.She will go purchase the gift herself. C.The gift should not be too expensive. D.They are gonging to Jane's house-warming party. 2. A.He is quite willing to give the woman a hand. B.It takes patience to go through the statistics. C.He has prepared the statistics for the woman. D.The woman should take a course in statistics. 3. A.Page 55 is missing from the woman's scripts. B.They cannot begin their recording right away. C.The woman does not take the recording seriously. D.The man wants to make some changes in the scripts.

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2005年12月24日大学英语六级考试A卷试题含答案 Part I Listening Comprehension (20 minutes) Section A 1.A) The dean should have consulted her on the appointment. B) Dr. Holden should have taken over the position earlier. C) She doesn’t think Dr. Holden has made a wise ch oice. D) Dr. Holden is the best person for the chairmanship. 2 .A) They’ll keep in touch during the summer vacation B) They’ll hold a party before the summer vacation C) They’ll do odd jobs together at the school library D) They’ll get back to their school once in a while 3. A)Peaches are in season now. B)Peaches are not at their best now. C)The woman didn’t know how to bargain. D)The woman helped the man choose the fruit. 4.A)They join the physics club. B)They ask for an extension of the deadline. C)They work on the assignment together. D)They choose an easier assignment. 5.A)She admires Jean’s straightforwardness B)She thinks Dr. Brown deserves the praise C)She will talk to Jean about what happened D)She believes Jean was rude to Dr. Brown 6.A)He liked writing when he was a child B)He enjoyed reading stories in Reader’s Digest C)He used to be an editor of Reader’s Digest D)He became well known at the age of six 7.A)He shows great enthusiasm for his studies B)He is a very versatile person C)He has no talent for tennis D)He does not study hard enough 8 A) John has lost something at the railway station B) There are several railway stations in the city C) It will be very difficult for them to find John D) The train that John is taking will arrive soon

毕赤酵母重组子的MDMM签定方法

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2005年12月5日

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