下列慢性颅内压增高所引起的头颅X线改变,错误的是()
A. 脑回压迹增多加深
B. 颅缝增宽
C. 蛛网膜粒压迹扩大增深
D. 枕大孔扩大
E. 蝶鞍扩大,前后床突及鞍背的骨质吸收
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多发性肌炎要与类风湿关节炎、系统性红斑狼疮、硬皮病及干燥综合征等引起的肌炎相鉴别,比较可靠的方法是()
A. 病因学方法
B. 病理学方法
C. 免疫学方法一特异性抗体的检测
D. 体检及肌电图
E. 临床症状特点
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,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(5)处应选择()
A. scenanos
B. places
C. applications
D. programs