多层螺旋CT对X线球管的要求最关键的是() ["旋转速度","外形尺寸","焦点大小","阳极热容量大","冷却方式"]
感光不足部分是() ["起始部","直线部","肩部","反转部","以上都是"]
下列不引起混合性呼吸困难的是(). ["重症肺结核","重症肺炎","慢性阻塞性肺气肿","弥漫性肺间质疾病","大量胸腔积液"]
男,58岁,吸烟20年,反复咳嗽咳痰8年,活动后气急3年,近日受凉后出现发热、咳嗽加剧,痰量多,白色泡沫样,查体双肺叩诊过清音,双肺底散在细湿啰音。提示最可能的病因是() ["败血症","慢性支气管炎急性加重","大叶性肺炎","肺梗死","继发型肺结核"]
下列发作类型属于偏头痛等位发作的是() ["发作性头痛后伴有眼肌瘫痪","先偏瘫,麻木失语数十分钟后发生头痛","周期性发生某些症状,而无头痛或与头痛交替出现","耳鸣共济失调,也可嗜睡状态或跌倒发作","发作迅速,持续1~2个小时可完全缓解"]
通过E3测定了解()通过L/S测定了解()