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问题 选择题

The Grand Theatre is located on one corner of ________ is called the People's Square.

A．which

B．what　

C．the place　

D．that

答案

答案：B

单项选择题 共用题干题

VRML is a（1）for 3D multimedia and shared virtual worlds on the WWW. In comparison to HTML, VRML adds the next level of interaction, structured graphics, and extra（2）（z and time） to the presentation of documents. The applications of VRML are（3）,ranging from simple business graphics to entertaining WWW page graphics, manufacturing, scientific, entertainment, and educational applications, and 3D shared virtual worlds and communities. X3D is the name under which the development of VRML is continued. X3D is based on XML and is backwards（4）with VRML. Furthermore, it is componentized, profiled, and extensible, which makes it possible to use X3D in very different（5），from high-end visualizations to lightweight applications.

空白（2）处应选择（）

A.subject

B.object

C.dimensions

D.disconnection
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问答题 简答题

解释一下扁平轮胎的优缺点及使用注意事项。
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