第一篇:以“success”为话题的英语口语考试
一、设计题目简介
图示为加热炉推料机结构总图与机构运动示意图。该机器用于向热处理加热炉内送料。推料机由电动机驱动,通过传动装置使推料机的执行构件(滑块)5做往复移动,将物料7送入加热炉内。设计该推料机的执行机构和传动装置。
加热炉推料机结构总图与机构运动示意图
二、设计参数与要求
加热炉推料机设计参数如表所示。该机器在室内工作,要求冲击振动小。原动机为三相交流电动机,电动机单向转动,载荷较平稳,转速误差<4%;使用期限为10年,每年工作300天,每天工作16小时。
表6-8 加热炉推料机设计参数
滑块运动行程H(mm)210 滑块运动频率n(次/min)30 滑块工作行程最大压力角 机构行程速比系数K 1.4 构件DC长度(mm)1140 构件CE长度(mm)160 滑块工作行程所受阻力(含摩擦阻力)(N)450 滑块空回行程所受阻力(含摩擦阻力)Fr1(N)100
图2.局部放大图
并由此得到滑块(输出构件)位移、速度、加速度线图如下:
0.00 0.80 1.60 2.40 3.20 4.004.805.606.407.208.00 时间(se-1 39 79 118
158平动位移Z(mm/
图4.滑块的速度-时间图 0.00 0.80 1.60 2.40 3.20 4.004.805.606.407.208.00 时间(se-858-410 37 484 931 质心加速度-Z(mm/se
图5.滑块的加速度-时间图
VI.设计任务6 根据上述计算过程及结果可以确定的最终方案的机构运动简图如下(各构件的运动尺寸及位置尺寸也已标注在图中)
图6.最终方案的执行机构简图(参数已标注)
第二篇:以微信为话题的英语口语考试对话
Topic:WeChat A:As you know ,WeChat is used more and more frequently in our daily life.What do think of WeChat role in life ? B:Well ,as you said ,we use WeChat more and more frequently in daily.Because it can make us communicate easily.We needn’t talk to each other at the same table.We also save time on our trip that we have to go to the meeting room.Through the video ,face to face conversation is very easy to compete.A:OK.You get the key point.Could you tell me how you use WeChat at ordinary time? B:As far as I’m concerned ,WeChat is a kind of communication tool.I often use it to chat with my family.Tell them the life I’m in school ,the people I meet,the classes I have and so on.It save the cost of calls.I think this is why it will be more and more frequent reason.What about yours? A:Do you have heard about micro business in WeChat ?You can sale the goods you agent through WeChat.There are so many people already having
their
own
small shops ,including me.This is a variety of part-time job.B:Do you think what the disadvantage of WeChat are?In my opinion ,there are always two sides
to
everything.Although communication tool makes us communicate easily ,it reduces our ability of oral communication.When we used to be the people behind the scenes ,it will be difficult to give a speech in front of the public.B:What’s your opinion of the difference between WeChat and QQ? A:Er..The accunt of QQ is from the system when you apple for QQ.On the other hand ,WeChat’s is just your phone number or E-mail ID.It leaves the trouble of memory.That’s all.
第三篇:英语口语考试话题
Please describe a city you love or interested in, explain why?
How do you like city life? Which aspect of city life do you find most enjoyable?
As there are more and more private cars, what do you think the government should do in order to encourage citizens to use public transport?
Describe a person who influences you most in your life.
Please describe one of the happiest things in your childhood.
Do you like pets? Why do people have pets?
Do you agree or disagree: people should always tell the truth? Why?
What are the advantages and disadvantages of living in the city?
Describe a person you respect or admire.And tell me why?
If you were given a billion dollars, what would you do with it?
Green food is now becoming more and more popular.Do you know why? And can you say something about the changes in people’s diet nowadays?
Why do some people prefer to live in the countryside?
“The thinner, the better?” You are free to exchange your views on beauty.
How would you like to get rid of your stress in daily life? Please share your experiences with your partner.
Do you think surfing on the Internet can help you? And how?
Do you have a mobile phone? If you do, do you think it’s good or bad? If you don’t, would you like to buy one? Why?
Do you like developing friendship or love with a key pal(网友)? Why or why not?
If you got 5,000,000 Yuan by winning lottery ticket, what will you do? Share your opinion with your partner.
Do you often judge people by appearances? How do you think about it?
Have you ever cheated on exams or thought of cheating on exams? What are the reasons? If not, what’s your opinion on cheating on exams?
Discuss the difference between college life and middle school life
What is your favorite holiday?(Spring Festival, Mid-autumn Festival, Qingming Festival, Christmas, etc.)
Do you love traveling? What places have you ever been to? Please share your traveling experiences with your partner?
How do you feel about students who are often late for class?
How do you get along with your roommates? What’s your advice for those who don’t get along well with each other in the same dorm?
Do you think it’s always wrong to tell a lie?
Please comment on Cheating in exams
Have you ever been cheated by anybody? If yes, please tell us about it.If not, how did you avoid being cheated?
What would you do if you find somebody cheating in exams?
Have you ever traveled long distances? Please say something about our travels.If not, have you any plans to do so?
Can you think of any measures to make people obey traffic rules? Please name one or two.
What are the positive and negative aspects of exams at college?
Do you think there can ever be absolute equality between men and women?
Can you say something about your grandparent? What do you think elderly people need most?
What do you think of campus life?What would you do if you feel lonely on campus?
第四篇:英语口语考试话题
1.Is part-time job good for university students? Why? 2.What does health food mean? In your opinion, what is the relationship between food and health? 3.Many people like to follow the fashion.Do you think it’s wise? What are the advantages and disadvantages of following the fashion? 4.What damage could an earthquake cause and what can human beings do to deal with it? 5.After finishing undergraduate studies, would you like to find a job or pursue a postgraduate degree? Why? 6.Ways to success: do you think success is due more to luck and opportunity ? why? 7.Talk about your experience of studying English.(When;how;what;favorite activities;difficulty;plan;goal;etc.)8.Internet for shopping: Have computers improved our lives? 9.Advertising: should people buy things according to what ads say? Why? 10.Share your traveling experience 11..Introduction to your family 12.Talk about your college life 13.Discussing your future job: what kind of work do you enjoy? 14.The relation between sports and health
第五篇:英语口语考试话题
1.家庭教育好不好 2.环保
3.和朋友吃饭
4.延迟退休年龄问题 5.现代科技
6.黑客与非法软件/音乐 7.议价交易 8.你喜欢的运动 9.素食主义 10.阅读好不好 11.回收利用 12.在海外学习13.太空探索 14.学生贷款 15.网络 16.国际援助 17.园艺
18.在电影院看电影好不好 19.付出与收获 20.团队合作
21.中国的成长与发展 22.电子书 23.网课
24.在家做饭好不好 25.团队运动
分类 优缺点类
在家做饭好不好 阅读好不好 家庭教育好不好
在电影院看电影好不好
学生贷款 电子书 网课 网络
全是好的列举1,2,3总结