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简述无牙颌的解剖标志。

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大叶性肺炎后少许残留的条索状高密度影最应鉴别的疾病是（）

A. 结核性纤维化
B. 肺炎
C. 叶间裂积液
D. 周围型肺癌
E. 肺脓肿

简述清理呼吸道无效时的护理要点。

以咳嗽与咳痰为主诉的患者，在病史询问时应包括哪些内容要点？

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（5）处应选择（）

A. scenarios
B. places
C. applications
D. programs