《秋夜》中象征手法
心肌的营养供应主要来自以下哪根血管（） ["颈动脉","乳内动脉","冠状动脉","头臂干动脉","肱动脉"]
下列何药炮制后有镇吐作用（） ["贝母","钩藤","延胡索","半夏","桔梗"]
压缩空气的设备由以下哪几部分构成（）。 ["空气压缩机","油水分离器","储存罐","输气管"]
维生素D缺乏性佝偻病可靠的早期诊断指标是（） ["干骺端临时钙化带消失","血清钙、磷浓度降低","血清活性维生素D水平明显降低","方颅、鸡胸或漏斗胸","多汗、夜惊、烦躁"]
弹性需求
