题目

如图所示，为某一景区过道，楼梯处立有一圆柱形立柱，直径为Φ100，现打算在其上安装一个木制指示牌（已知指示牌上有两个直径为Φ6的圆孔，孔心间距80mm）。现提供长度不限，宽度为200mm，厚度3mm的薄铁片，请设计一个安装指示牌的连接件。设计要求如下：a.不得对柱形立柱进行任何改造；b.连接件与指示牌拆装方便，且将连接件固定于立柱时不能损伤立柱。请根据上述要求，完成以下任务： （1） 画出连接件结构的设计草图，必要时用文字根据短文内容，从短文后的七个选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。The Internet has opened up a whole new online world for us to meet, chat and go where we’ve never been before.But just as in face to face communication, there are some rules of behavior that should be followed when on line. 1. Imagine how you’d feel if you were in the other person’s shoes. For anything you’re about to send: ask yourself, “Would I say this to the person’s face?” If the answer is no, rewrite and reread. 2. If someone in the chat room is rude to you, your instinct(本能) is to fire back in the same manner. But try not to do so. 3. If it was caused by a disagreement with another member, try to fix the situation by politely discussing it. Remember to respect the beliefs and opinions of others in the chat room. 4. Offer advice when asked by newcomers, as they may not be sure what to do or how to communicate. When someone makes a mistake, whether it’s a stupid question or an unnecessarily long answer, be kind about it. If it’s a small mistake, you may not need to say anything. Even if you feel strongly about it, think twice before saying anything. Having good manners yourself doesn’t give you license to correct everyone else. 5. At the same time, if you find you are wrong, be sure to correct yourself and apologize to those that you have offended（冒犯）. It is not polite to ask others personal questions such as their age, sex and marital(婚姻的) status. Unless you know the person very well, and you are both comfortable with sharing personal information, don’t ask such questions.A. If you do decide to tell someone about a mistake, point it out politely.B. It’s natural that there are some people who speak rudely or make mistakes online.C. Repeat the process till you feel sure that you’d feel comfortable saying the words to the person’s face.D. Everyone was new to the network once.E. The basic rule is simple: treat others in the same way you would want to be treated.F. When you send short messages to a person online, you must say something beautiful to hear.G. You should either ignore the person, or use your chat software to block their messages.