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问题 选择题

下列各项中最能体现中国在国际社会长期发挥重要作用的是

A．担任联合国安理会常任理事国

B．在亚非会议倡导求同存异方针

C．坚持独立自主和平外交政策

D．成为世界贸易组织的成员国

答案

答案：A

本题考查学生的分析判断能力，A项最符合题意，因为中国代表广大的发展中国家，B项不能体现其长期作用，C项是中国外交政策的体现，D项金属于经济方向，故选A

单项选择题

OSI参考模型中最上层的是______。

A．表示层

B．网络层

C．会话层

D．应用层
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单项选择题

（）analysis emphasizes the drawing of pictorial system models to document andvalidate both existing and/or proposed systems. Ultimately, the system models become the（）for designing and constructing an improved system. （）is such a technique. Theemphasis in this technique is process-centered. Systems analysts draw a series of processmodels called （）. （）is another such technique that integrates data and processconcerns into constructs called objects.

（）analysis emphasizes the drawing of pictorial system models to document andvalidate both existing and/or proposed systems

A．Prototyping

B．Accelerated

C．Model-driven

D．Iterative
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