题目内容
评价一个计算机系统时，通常使用 (1) 来衡量系统的可靠性，使用 (2) 来衡量系统的效率。 (1)
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Questions 158-160 refer to the following letter. Bob Schmidt 295 Seneca Street, Palm Springs, CA, 92262 July 11 Mr. James Palmer 285 North Palm Canyon Drive, Palm Springs, CA, 92262Dear Mr. James Palmer, I am a tenant in your apartment at 295 Seneca Street. I am writing to you because I will need an extension on my August rent payment. As you know, my rent is always paid on the 1st of each month and no later than the 5th. Unfortunately, I will not be able to send the money on time and would like an extension to August 20. Nature Publishing Group, where I used to work, was acquired by One Media Holdings last month. This company moved its corporate headquarters to Wilmington, Delaware. Although I lost my job, Nature Publishing Group’s employees here were promised severance pay but have yet to receive it. Company attorneys insist that payments will be made by August 18th. I have leased this apartment from you for several years and have never been late with rent payment. As this apartment is comfortable and quiet, I have no desire to leave this place. My financial problems will be resolved, since I will start a new job at the beginning of September. I would like to thank you in advance for your consideration. Sincerely yours, Bob Schmidt Where does Mr. Bob Schmidt live
Questions 153-154 refer to the following memo. MEMO To: All employees From: Jane McKinley Date: Monday, 29 March 2007 Subject: Computer maintenance We will be performing routine maintenance on the computer system this Friday, March 2, starting at 6 A. M. We will be restarting the main computer, which will result in a brief loss of services at some points during the one-hour maintenance. A brief message will appear on screen five minutes before the maintenance occurs. It instructs computer users to save all data and exit all programs. After the maintenance is completed, users may resume working. What will happen this Friday
Questions 161-163 refer to the following advertisement. DALLY NEWS TODAY is seeking full-time Administrative Assistants for our Advertising Department. Proofreading administrative reports and editing business documents will be the most important and frequent tasks of the position. The job also involves answering phones, taking orders for advertisements and analyzing reports. Other duties will include organizing mailings, updating database, Internet research, photocopying, making travel arrangements, and day-to-day office tasks. The candidates must have excellent organizational skills. Multitasking and computer skills are a must. The successful candidates must be able to use word processing software to create documents with two or more columns of text. It is absolutely crucial that the candidates are able to speak German fluently. Previous office experience preferred but not essential. We offer a competitive wage and benefits package, including health and dental insurance coverage, paid holidays, and paid time off. Interested candidates should fax or mail resume and a cover letter to: Danny Walker (Mr. ) Dept: Human Resource Management DAILY NEWS TODAY One Bethesda Metro Center (7400 Wisconsin Ave), Bethesda, Maryland 20814 Fax: 301-657-1453 No phone calls please What is the main responsibility of the job
I/O系统主要有三种方式来与主机交换数据，它们是 (1) 、 (2) 和 (3) 。其中 (1) 主要用软件方法来实现，CPU的效率低； (2) 要由硬件和软件两部分来实现，它利用专门的电路向CPU中的控制器发出I/O服务请求，控制器则 (4) 转入执行相应的服务程序； (3) 主要由硬件来实现，此时高速外设和内存之间进行数据交换 (5) 。 (2)
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