下列哪项是3D成像的原理()
A.利用光学原理与系统进行3D成像
B.利用光学系统和图像叠加原理
C.利用计算机辅助进行3D重建
D.基于二维平面重建
E.以上均是
参考答案:E
In fact, a number of recent developments suggest that new media may actually be. the salvation of old media; that online newspapers, Webzines, and e-books could preserve and extend the best aspects of the print culture while augmenting it with their various technological advantages.
A.limiting
B.maintaining
C.distinguishing
D.increasing
患儿男,12岁,身高142cm,体重35kg,一周前感冒后出现右耳闭塞感,昨天开始右耳隐痛,吞咽时可听见"噼啪"声。张口检查见患儿硬腭略微高拱,双下甲略肿胀,双下鼻道少许清涕。
根据病史和临床表现初步可以诊断为分泌性中耳炎,常见致病因素有()
A.噪音
B.咽鼓管机械性阻塞
C.免疫反应
D.非机械性咽鼓管阻塞
E.感染
F.以上都是