17 小学生的主导活动是_____________。 A.学习 B.游戏 C.运动 D.工作 - 查题网

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河南成教 / 河南理工大学

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17
小学生的主导活动是_____________。

A.学习

B.游戏

C.运动

D.工作

积分

河南理工大学

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题干如下图所示变截面杆AC，在A、B两处分别受到50kN和140kN的力的作用，材料E=200GPa。求：（1）变截面杆AC的轴力图为回答ABCD。（2）AB段正应力σAB=回答ABCD。 A．100MPa B．50MPa C．—50MPa D．—100MPa （3）CB段正应力σCB=回答ABCD。 A．90MPa B．18MPa C．—18MPa D．—90MPa （4）AC杆总变形量Δl=回答ABCD。（提示：虎克定律） A．0.05mm（伸长） B．0.45mm（伸长） C．—0.5 mm（缩短） D．—0.05mm（缩短）反馈机械设计基础

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题干二、阅读理解：阅读下面的短文，根据文章内容从A、B、C三个选项中选出一个最佳选项。 Roby Mini is just 40 centimeters tall, has a large round screen for a head and has been designed to help senior citizens living alone. Manufactured by robotics company Shanghai PT Info, the brightly colored robot, which costs 5,000 yuan ($790), was launched on Aug 14 to help entertain and monitor elderly people. In Shanghai last year, the number of registered residents at least 60 years old was 4 million. That was nearly 30 percent of the population. By 2018, the figure is projected to rise to 5 million. With many living alone, robots such as Roby Mini can help play a crucial role in caring for the elderly. "It will change the way people interact with digital products," Hong says. Founded in May, Shanghai PT Info had already done the groundwork. In fact, the research team spent three years developing the speech recognition system before the firm was officially launched. With 360-degree wheels hidden under its body, Roby Mini can follow a person through face recognition and strike up a conversation, tell jokes or provide information. The robot also works as a computer terminal, supplying weather information, ordering groceries online and even booking taxis. Roby Mini can be connected to other gadgets as well, such as smart wristbands or magnetic devices on doors. Roby Mini can also connect an elderly owner to a doctor through its high-definition screen.Already Shanghai PT Info is talking to three community hospitals in Shanghai's Minhang district. Since the robot is linked to the Internet, it can support long-distance audio and video calls. Mass production started this month and Shanghai PT Info plans to manufacture 200,000 units this year. But the future is not easy for Shanghai PT Info. Earlier this year, Flyingwings Intelligent Robot Technology (Shanghai) introduced a machine with sensors that will ring an alarm when an elderly person falls down.Tianjin ShangjiuShengyuan Technology Group also developed a robot for seniors in 2014. Owners can turn on the lights and air-conditioning units by pressing buttons on the machine.It can also remind elderly owners to take pills, and inform them of hospital checkups and family birthdays. 1. Roby Mini is the name of.回答ABC正确获得10.00分中的10.00分 A. a robotics company B. a robot C. a senior citizen living alone 2. Roby Mini is designed to.回答ABC正确获得10.00分中的10.00分 A. help look after children living alone in senior high school B. help entertain and monitor senior citizens C. change the way people interact with digital products 3. According to this passage, the number of registered residents at least 60 years old will be. 回答ABC正确获得10.00分中的10.00分 A. 4 million next year B. 30 percent of the population C. increase to 5 million by 2018 4. The writer thinks “the future is not easy for Shanghai PT Info” because.回答ABC正确获得10.00分中的10.00分 A.there are too many elder people in Shanghai B. Roby Mini cannot ring an alarm when an elderly person falls down. C. the company will face tough competition in the marketplace 5. The best title for this passage is.回答ABC正确获得10.00分中的10.00分 A. How to Use a Robot B. Elder People Increase in Shanghai C. Robot Gives Help to Older People反馈解析： 1.Roby Mini是上海PT Info公司设计的一款机器人的名称，并不是这个公司的名称。所以选B。 2. Roby Mini这款机器人设计出来是要运用于辅助照顾老年人。第一段里面提到help senior citizens living alone，第二段又提到to help entertain and monitor elderly people。elderly people在这里相当于senior citizens的意思，都是指老年人。所以选B。 3. A和B选项提到的都是过去的状况。而对于将来，在第三段提到By 2018, the figure is projected to rise to 5 million.说明超过60岁的老年人的数量将会增加到500万，与C选项的描述相符合。所以选C。 4. 作者在说到the future is not easy for Shanghai PT Info之后，紧跟着讲了有多个公司也设计出了针对老年人的机器人产品。意思是上海PT Info公司面临的问题在于要和市场上其他公司的同类产品进行竞争。所以选C。 5. 文章主要讲述了上海PT Info公司研发出的Roby Mini具备多种功能，能够帮助照顾老年人，并不是讲的如何使用这个机器人。虽然也提到了上海老年人口的增加，但只是背景，并不是全文的主要内容，所以只有C选项最为符合。理工英语4

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