【单选题】光导纤维是利用光的 ( ) 原理来远距离传输信号的。
【单选题】光导纤维是利用光的 () 原理来远距离传输信号的。
【单选题】患者男性,59岁,声嘶伴咽部不适半年,痰中带血1个月。查体:甲状软骨膨大,右上颈部(Ⅱ区)可及大小约2cm×2.5cm质韧固定包块,无压痛。既往否认结核病史。患者行颈部MRI提示肿瘤位于声门上区,并侵及会厌前间隙、左侧咽壁、会厌及甲状软骨,左侧声带固定,口咽及咽旁无侵犯,上颈可见多个肿大淋巴结。直接喉镜病检提示声门上区中分化鳞癌。其他辅助检查未见转移。该患者术前放疗若采用适形放射治疗或IMRT,关...
A.
患者同侧Ⅱ区淋巴结阳性,CTV无需包括同侧下颌下淋巴结(即Ⅰ区)
C.
照射范围包括双侧Ⅰ~V区淋巴结区域+咽后淋巴结
D.
照射范围包括右侧Ⅰ~V区淋巴结区域+咽后淋巴结
【简答题】Barack Obama, a black man, is the president of the United States now. He was born in August ,1961, in Hawaii and has lived in many places. His mother was from Kansas and his father was from Kenya. Oba...
【简答题】It happened to me recently. I was telling someone how much I had enjoyed reading Barack Obama’s Dreams From My Father and how it had changed my views of our President. A friend I was talking to agreed...