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FTP协议的缺省端口号是( )

A. 21
B. 23
C. 25
D. 29

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下列不是网络操作系统的是( )

A. Windows Server 2008
B. Linux
C. UNIX
DOS

Web服务通过( )协议来建立连接。

A. FTP
B. IP
C. HTTP
D. WWW

The following is a list of key points of a letter of invitation. You are required to find their Chinese equivalents.()1. State who is invited and what kind of event will be held.()2. State the occasion, date, time, and place.()3. State what kind of expenses will be covered.()4. Provide a phone number or an e-mail address as well as the deadline by which to reply if you need a response.()5. Express that you are looking forward to seeing the person.A. 表达盼望之情B. 说明活动的日期、时间、地点C. 提供电话或邮箱地址,如果需要对方回复还需说明回复的截止时间D. 陈述受邀人和举办的活动E. 说明所承担的费用

SampleFrom: johntj@yahoo.comTo: yamata123@163.comSubject: a letter of invitationDear Dr. Yamata,The Association of Asian Economic Studies(亚洲经济研究协会) is pleased to invite you to be this year’s guest speaker at its annual international symposium (研讨会).The symposium will be held for three days from December 22 to 24, 2016. This year’s theme will be “ Economic Development in Asia.” About 100 people from various countries will be attending the symposium. They would be pleased to meet you and share their views with you.The Association will cover all the expenses of your trip.As the program is to be announced on December 1, 2016, will you kindly let us know before that time whether your busy schedule will allow you to attend our symposium? We are looking forward to your favorable reply.Yours sincerely,John SmithSecretary of the Associationof Asian Economic StudiesTask:Give brief answers (in no more than 3 words) to the 5 questions that follow.1. Which organization will host the symposium?The Association of __________________________________.2. How long will the symposium last ?The symposium will last for ________ days.3. What is the theme of the symposium?The theme of the symposium is “______________________________ in Asia.”4. How many people are invited to the symposium?About _______ people from various countries.5. When should Dr. Yamata reply to the e-mail?Dr. Yamata should reply to the e-mail no later than _______________________.

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