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【简答题】
When we talk about getting online, we mean being connected to the Internet---a giant network of computers that connects people and information all over the world. The Internet has a lot in common with other forms of communication: Like the U.S. postal service, the Internet allows anyone who knows your Internet address to send you a letter. (It’s called electronic mail or e-mail for short.) Like the telephone, the Internet allows you to “chat” with other people by participating in online discussing groups. Like the library, the Internet contains information on almost any topic you can imagine in many formats, including books, articles, videos, and music recordings. Like the newspaper, the Internet can give you new information every day, including world news, business, sports, travel, entertainment, and ads. In addition to words, one part of the Internet---the World Wide Web (often shortened to WWW or Web)---is especially interesting to people because it includes pictures and sounds. The Internet began in the 1960s as a U.S. Department of Defense communication network. Soon after, university researchers and professors began to use it to communicate with others in their fields. Internet use really took off in the early 1990s with the arrival of the Web, which make it easier to find and view information online. Today, millions of people throughout the world are connected to the Internet. No one is in charge of the people throughout the world are connected to the Internet. No one is in charge of the Internet; it’s growing and its format and content is being changed by its users every day. A computer that is connected to the Internet allows your home, community center, local library, or school to turn to a place of unlimited information and communication. The Internet can help your family: Find educational resources, including up-to-the-minute news, copies of important documents and photos, and collections of research information on topics ranging from weather conditions to population statistics. Get help with homework through online encyclopedias and other reference materials and access to experts Increase reading skills by providing access to interesting materials and suggestions for additional reading. Improve technology and information skills necessary to find and use information, and meet a growing demand for these skills in the workplace. Connect with places around the world to exchange mails with electronic pen pals and to learn about other cultures and traditions.
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【简答题】为方便制版印刷设备所识别、编辑,包装设计制图文件一般保存成( )或( )格式。
【判断题】串行口中断标志位 TI和RI必须用软件清零。 ( )。
A.
正确
B.
错误
【简答题】为方便制版印刷设备所识别、编辑,版式设计制图文件一般保存成【 】 或【 】格式。
【简答题】校验和法杀毒是通过计算正常文件内容的 ,并将该 写入文件保存,杀毒时将当前计算的文件校验和与保存的正常的文件校验和相比较,从而判断是否感染了病毒的一种方法。
【单选题】已知开环不稳定极点(即在S右半平面)的数目p=2,开环系统频率特性的极坐标图如图所示,则闭环系统的不稳定的极点数目为( )。【图片】
A.
1
B.
4
C.
0
D.
2
【单选题】在谈判成交阶段,客户使用 “ 霸王条款 ” 的目的在于: ( )
A.
博得同情
B.
制造错觉
C.
攻心夺气
D.
检验素质
【简答题】已知某商品的需求价格弹性为 ,且当P=1时,需求量Q=1. (1)求商品对价格的需求函数; (2)当P→∞时,需求是否趋于稳定。
【判断题】串行口中断标志位 TI必须用软件清零。 ( )
A.
正确
B.
错误
【单选题】设某商品的需求函数为Q=160—2P,其中Q,P分别表示需求量和价格,如果该商品需求弹性的绝对值等于1,则商品的价格是( ).
A.
10
B.
20
C.
30
D.
40
【单选题】在国外住学校宿舍我们应该注意什么?
A.
对其他肤色的同学进行排斥。
B.
随意吸烟
C.
自己做完中餐后,不想洗碗,放在水盆边上。
D.
保管好自己的钥匙,不借给他人使用。
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