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职业中毒概述
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（4）处应选择（）
常见三音心律的产生机理，听诊特点及临床意义
女，39岁，呕吐、腹泻2天，烦躁不安半天急诊入院。查体：BP120/80mmHg，神志恍惚，巩膜中度黄染，颈部可见数枚蜘蛛痣。心肺未见异常，腹软，肝肋下未触及，脾肋下3cm。双上肢散在出血点，Hb90g/L，WBC2.22×109/L，血糖7.0mmol/L，尿糖（+），尿酮（-），尿镜检（-）。对此患者的治疗，下列各项中不正确的是（）
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