中央型肺癌常好发于() ["肺门部","段支气管","段以下支气管","段支气管以上至主支气管","主支气管以上"]
运动时间对血糖的影响错误的是() ["运动时间延长,肌肉摄取血糖量保持上升趋势","运动时间延长,肌肉摄取血糖量保持下降趋势","短时间大强度运动,血糖变化不大","运动后血糖明显上升","长时间运动血糖下降"]
引起变态反应的主要血液成分是() ["红细胞","血浆","淋巴细胞","血小板","中性粒细胞"]
男性,68岁,2周前曾发生急性心肌梗死,现出现心前区跳动性疼痛,闻及心包摩擦音,肌钙蛋白正常,治疗首选() ["异烟肼","阿司匹林","糖皮质激素","地高辛","呋塞米"]
患者,女性,55岁,突发剧烈胸痛伴发热,心电图示ST段除aVR导联以外呈弓背向下型抬高。最可能的诊断为() ["急性心包炎","张力性气胸","急性心肌梗死","变异型心绞痛","病毒性心肌炎"]
什么是超声波加工?它适用于加工什么材料?