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问题 单项选择题

便民箱内应配置针线包、老花镜等常备用品，禁止在便民箱内配置（）；应定期查看，保证内置物品齐全，废旧物品应及时更换。

A.剪刀

B.刀具

C.尖锐物品

D.药品

答案

参考答案：D

单项选择题

（）结构以太网交换机使用高速RAM输入数据。

A.软件执行交换

B.共享存储器交换

C.总线交换

D.矩阵交换
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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,andextra（2）（z and time）to the presentation of documents.The applications of VRMLare（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 wluch the development of VRML is continueD.X3D is based on XML andis 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（4）处应选择（）

A.inconsistent

B.independent

C.applicable

D.compatible
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