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 高等继续教育 / 电子技术基础(电气)

题型描述: 简答题
电路如图所示,二极管为同一型号的理想元件,电阻R=4 ,电位uA=3V,uB=4V,分析二极管的工作状态,计算电位uF 的值。
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  • 题干二、阅读理解(每题10分) 阅读下面的文章,根据文章内容给题目选择正确的答案。 The Importance of Information in the Supply Chain Information is important because it provides the facts that supply chain managers use to make decisions. Without information, a manger will not know what customers want, how much inventory is in stock and when more products should be produced and shipped. In short, without information, a manager can only make decisions blindly. Managers must understand how information is gathered and analyzed. This is where information technology comes into play. Information technology serves as the eyes and ears of management in a supply chain, capturing and delivering the information necessary to make a good decision. For instance, an IT system at a personal computer manufacturer may help a manager analyze the information and recommend an action. The manager can use the remaining chips first, then look at demand forecast, and determine whether to order more chips. There are four reasons why timely and accurate information has become more important for effective logistics system design and operations. First, customers recognize information about order status, product availability, delivery schedule, and shipment tracking as necessary elements of total customer service. Then, managers realize that information can be used to reduce human resource requirements. What’s more, information increases flexibility with regard to how, when, and where resources may be used to gain strategic advantage. And finally, enhanced information transfer and exchange capability using the Internet is changing relationships between buyers and sellers and refining channel relationships.   1.Information is so important that .回答ABC未回答获得10.00分中的0.00分 A. it provides the facts that supply chain managers use to make decisions B. managers can only make decisions blindly without it C. managers will know nothing without it 2.Information technology.回答ABC未回答获得10.00分中的0.00分 A. could be used to gather and deliver information to make decisions B. can be used to determine whether to order more chips C. is necessary to make a good decision 3.Information can.回答ABC未回答获得10.00分中的0.00分 A. help customers to know many things but not product availability. B. not be used to reduce human resource requirements C. help to refine channel relationships 4.If you are a manager, you will use information to .回答ABC未回答获得10.00分中的0.00分 A. order more chips B. help improve customer service C. know which staff is not on duty and should be laid off 5.The main point of this passage is about.回答ABC未回答获得10.00分中的0.00分 A. how to use information B. the importance of information C. where to gather information反馈解析: 1. 这是一道细节题。本题考查信息重要性的程度。第一段的最后一句话告诉读者,没有信息,经理只能盲目地做出决断,所以选B。 2. 这是一道细节题。第二段第三句话表明,信息技术是供应链管理的耳目,能获取和传递必要信息以便做出明智的决断,所以选A。 3. 这是一道细节题。第三段详细说明了及时、精确的信息之所以如此重要的四个原因,所以答案为C。 4. 这是一道推断题。文章第一段第二句话Without information, a manger will not know what customers want…,言外之意,有了信息,经理就能了解客户所需,也就能很好地为客户服务了。选项A只是涉及“订购芯片”一个例子;选项C没有提到,所以答案是B。 5. 这是一道主旨题。本文主要讲述了供应链中信息的重要性,所以选B。商务英语3