视乳头是视野上生理盲点所对应的部位,主要原因为该处() ["无脉络膜结构","无色素上皮","视细胞被视网膜中央动静脉遮盖","仅有神经纤维而无视细胞","仅有视杆细胞而无视锥细胞"]
男,30岁,低热月余咳痰带血5d,3年前患过胸膜炎;X线胸片示左肺尖密度不均阴影;ESR30mm/h,WBC8.0×10/L。为明确诊断,下列哪项检查最为重要() ["A.PPD试验","痰检抗酸杆菌","痰检瘤细胞","胸部CT","ESR检查"]
面神经管在颞骨内走行呈() ["直线","弧形","1曲2段","2曲3段","3曲4段"]
男性,30岁,呼吸困难2天就诊,发病前有鼻痒,喷嚏。继往有类似病史,体检:呼吸20次/分,双肺闻及呼气末哮鸣音,心率96次/分,律齐。 ["
动脉血气分析PaCO238mmol/L,PaO296mmHg,pH7.39。根据临床表现和血气分析结果,其病情程度分级为()"]
脉络膜血液主要通过以下哪个血管回流() ["睫状后短静脉","睫状后长静脉","睫状前静脉","涡状静脉","视网膜中央静脉"]
炉造白渣的方法是什么?