关于Web格式的邮件的缺点说法正确的是______。

【名词&注释】

成熟度(maturity)、公安机关(public security organs)、自上而下、许可证(license)、营业执照(business license)、计算机信息系统安全(computer information system security)、文本格式(text format)、产品销售(product sales)、方法的准确性

[单选题]关于Web格式的邮件的缺点说法正确的是______。

A. 使用价格高昂
B. 使用人群有限制
C. 内容有限制
D. 比普通的纯文本格式^{(text format)}邮件容量大

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[单选题]进行项目估算时，需要根据项目的特点等因素，决定采用何种估算方法。( )方法的准确性会受到所采用估算模型的成熟度和基础数据可靠性的影响。

A. 专家判断
B. 类比估算
C. 参数估算
D. 自上而下估算

[单选题]销售计算机信息系统安全专用产品必须()。

A. 办理营业执照
B. 申领《计算机信息系统安全专用产品销售^{(product sales)}许可证》
C. 办理经营许可证
D. 先向公安机关申请许可

[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

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