从耳尖直上1.5cm处,向前及向后各引2cm的水平线是()
A.感觉区
B.舞蹈震颤控制区
C.晕听区
D.言语二区
E.言语三区
参考答案:C
某企业集团拟建设一个基于无线局域网(WLAN)的网络电话通信系统,以降低或者免掉内部员工通话费。该集团委托PH系统集成公司承建。PH公司的规划师老郭带队去进行需求调研,在与委托方会谈过程中记录了大量信息,经过整理,归纳出如下主要内容: 用户数量:460人;业务类型:语音通信;技术需求:基于IEEE 802.11n标准改进的手机通信系统;分布范围:分布在某城市内的经营机构(另附分布位置图一张);最远距离:25km;连接Internet:暂不考虑;项目建设周期:两个月;项目初期投资:120万元。 在撰写需求分析报告时,规划师老郭发现缺少了一些很重要的信息,其中最主要的内容是______。 为此,规划师老郭深入到相关部门进行调研,获得所需信息后,开始撰写需求分析报告。该报告的目录如下:一、业务需求;二、用户需求;三、用户终端需求;四、网络需求;五、建设周期;六、申请批准部分。关于该报告的评价,最恰当的是______。
A.应用系统的运行平台 B.手机通信系统的性能指标 C.政策约束 D.经费预算明细
In the following essay, each blank has four choices. Choose the best answer and write down on the answer sheet.
It is more and more usual that users of Information Retrieval (IR) systems must face up to response of hundreds or thousands of (1) documents. A significant proportion of them are moreover (2) or redundant. This is a straight consequence of two well - known facts: the incessant growing of documental databases and the lack of ability of most users to define (3) information needs. In such a framework, further effective retrieval techniques are only part of the solution. Interfaces with alternative ways for organizing and (4) the results returned by a (5) would be of great utility assisting users to find relevant documents. Document clustering may play a central role as an effective technique for organizing query results.
1()
A.replied
B.retrieved
C.received
D.relied