【名词&注释】
模拟信号(analog signal)、播放器(player)、随机存取(random access)、不支持(not support)
[单选题]Internet2可以连接到现在的internet上，但他的宗旨是组建一个为其成员组织服务的专用网络，初始运行速率可以达到
A. 51.84mbps
B. 155.520Mbps
C. 2.5Gbps
D. 10Gbps
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举一反三：
[单选题]采样是把时间连续的模拟信号转换成时间离散、幅度联系的信号。某信号带宽为20～20000Hz，为了不产生失真，采样频率应为______。
A. 20Hz
B. 40Hz
C. 20000Hz
D. 40000Hz
[单选题]文件存储设备中，__（）__不支持(not support)文件的随机存取。
A. 磁盘
B. 光盘
C. 软盘
D. 磁带
[单选题]Due to a constantly(66) environment, a poor understanding of the user's needs and preferences, as well as a(67) of willingness to modify.(68) organizational structures and decision models, the full economic potential of Web Information Systems (WIS) has not been realized by now. The data object types of the(69) meta. model, the Extended World Wide Web Design Technique (eW3DT), provide hypertext designers(70) a conceptual, user-centric framework and graphical notation for the construction of both,(71) and customized models, during the software development(72) of commercial WIS. A reference model as a normative concept represents an abstraction of a(73) company, its functional units, or its Web Information System and is intended to streamline the design and implementation of complex applications at(74) costs. As precondition for pursuing a partial globalization strategy,eW3DT(75) between technical and content-specific responsibilities for designing, implementing, and maintaining WIS.
A. modify
B. changing
C. modifying
D. changed
[单选题]●在ASP组件中， (62)可以方便地在Web页面中插入广告的播放器。(62)
A. Ad Rotator
B. Browser Capabilities
C. Database Access
D. File Access
[单选题]●在EDI的软件结构中， (21)能自动处理由其它EDI系统发来的EDI报文。(21)
A. 内部接口模块
B. 报文生成及处理模块
C. 格式转换模块
D. 通信模块
[单选题]PKI的主要组成不包括()。
A. CA
B. SSL
C. RA
D. CR
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