问题
单项选择题
站用交流电源屏柜上的设备与各构件间连接应牢固，在振动场所，应按设计要求采取防振措施，且屏柜安装的偏差应在（）内。
A.允许范围
B.技术协议要求
C.用户要求
D.制造厂设计范围
答案
参考答案：A
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站用交流电源屏柜上的设备与各构件间连接应牢固，在振动场所，应按设计要求采取防振措施，且屏柜安装的偏差应在（）内。
A.允许范围
B.技术协议要求
C.用户要求
D.制造厂设计范围
参考答案：A
| 完形填空。 | |||
| Many people use email to communicate with each other. If you can surf the Internet, it is a great __1__ to send messages easily, quickly and as often as you like. No __2__ is it necessary to find a pen or paper, not to __3__ an envelope or stamp. Are we missing anything by not writing paper letters to people? Must you take the __4__ of writing them if you want to receive such letters? Most people would probably answer, "No, it is a waste of paper __5__ , and this is a much better system." It is hard to be against such a viewpoint. However, I would like to try. I believe that the kinds of letters people __6__ to write were probably more __7__ than billions of emails sent today. Of course, when it __8__ to sending quick messages, email is the best. If __9__ is important, email is particularly useful. __10__, if you want really to touch someone, a letter is more personal. __11__ letters are the most personal. If you can type fast, you can put a lot into a letter, but it lacks (缺 少) the special sense that comes from seeing the handwriting. As long as it is understandable, it doesn't matter how tidy it is. When someone sits down and just writes to you, you will __12__ that when you are reading it. Though I'm a teenager, I admit that I too feel __13__ to receive a letter in the mail. I love seeing my name written by hand on __14__ . You make yourself a cup of coffee, sit down in a comfortable place, open your letter , and enjoy everything that the person puts into those words just for you. What a gift! | |||
| ( ) 1. A. chance ( ) 2. A. longer ( ) 3. A. say ( ) 4. A. question ( ) 5. A. anyway ( ) 6. A. needed ( ) 7. A. important ( ) 8. A. runs ( ) 9. A. money ( ) 10. A. However ( ) 11. A. Long ( ) 12. A. feel ( ) 13. A. excited ( ) 14. A. a letter | B. way B. much B. speak B. trouble B. too B. used B. useful B. leads B. meaning B. So B. Typed B. love B. disappointed B. a list | C. fun C. less C. talk C. pleasure C. simply C. got C. helpful C. comes C. feeling C. Therefore C. Handwritten C. want C. puzzled C. a paper | D. time D. important D. mention D. problem D. just D. agreed D. meaningful D. arrives D. time D. But D. Short D. like D. surprised D. an envelope |