题目内容
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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Questions 164-166 refer to the following memo. To: All staff From: Manager of the Maintenance Service Section Date: September 17th RE: New Telephone System Our new telephone system will be installed over the coming weekend and will be operational Monday morning with the new system. Each staff member will continue to have individual voice mail, allowing callers to leave voice messages for you when you are not available to take a call. Calls can still be routed to the main switchboard if you prefer to continue to have one of the operators take messages for you. In addition, every telephone including the ones in the conference rooms will be set up for conference calls and for long distance calls. You will need to use your employee code to make long distance calls. If necessary, operators can arrange conference calls for you, if given at least thirty minutes’ notice. There will be a twenty-minute introduction to the system offered in Conference Room 3 on Monday at 10:00 A. M. , 11:00 A. M. , and 1:30 P. M. Please plan to attend one of these sessions so that you will be able to fully utilize the features of our new phone system How are messages presently taken
Questions 191-195 refer to the following two e-mail messages. To: Kelly Hoffman ＜kelly@glipublishing. com＞ From: Henry Samuel ＜henry@glipublishing. com＞ Date: December 23 Subject: Difficulty accessing the InternetDear Ms. Kelly Hoffman, I suddenly had difficulty accessing the Internet. I had no problem accessing outside web sites this morning. But since I returned from lunch, I haven’ t been able to access web sites outside of the company’s networks. I contacted the technical support manager immediately, but I haven’t gotten a response yet. My colleague, Ms. Carol Hewitt, said you helped her solve her technical problem before and suggested I make a call to you directly. Is there a problem with the company’s Internet connection or is this problem unique to my workstation Thank you very much for your help. To: Henry Samuel ＜henry@glipublishing. com＞ From: Kelly Hoffman ＜kelly@glipublishing. com＞ Date: December 23 Re: Problem with access to the Internetear Mr. Henry Samuel, I’m very sorry for the inconvenience. Our technical support manager, Mr. Keith Wilson usually handles Internet problems but he will be out of the office until December 27, 2007. The failure of access seems to be occurring randomly. Almost all employees still have full online access but your workstation must be one of the ones that are experiencing connection problems today. To determine the cause of the problem and prevent it from happening again, I have forwarded your e-mail to our system administrators for further investigation. I expect to have the situation resolved within an hour. In the meantime, please delete your temporary Internet files. These files may have become corrupted and could possibly be contributing to the problem. Instructions for deleting the files can be found in your employee manuals. I will be leaving the office at 4 p. m. today. If you need further assistance after that time, please contact Mr. Gavin Newsom, my assistant. Kelly Hoffman Technical Support Department What is Mr. Henry Samuel instructed to do
某硬盘中共有9个盘片，16个记录面，每个记录面上有2100个磁道，每个磁道分为 64个扇区，每扇区为512字节，则该硬盘的存储容量为 (1) 。磁盘的位密度随着磁道从内向外而 (2) 。 (1)
医疗机构因违法实施疫情控制措施，侵犯就医人合法权益的，受害人可以依法采取的有效救济途径是
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