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问题 单项选择题

西周的强盛表现在（）①统治区域空前广袤②政治、经济制度较为完备③奴隶制经济有较大发展④以儒家文化为核心的精神文明勃兴

A.①

B.①③

C.①②③

D.①②③④

答案

参考答案：C

单项选择题

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.

（69）（）

A.gives

B.distinguishes

C.has

D.difference
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单项选择题

在（）及以上中性点直接接地系统中，变压器停、送电及经变压器向母线充电时，必须将中性点接地开关先合上，随后进行其它操作。

A.10kv

B.220kv

C.35kv

D.110kv
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