间隔线(克氏线)的出现不仅标志着__________________的存在,而且是诊断_____________较可靠的征象。
用链霉素治疗结核病引起耳中毒症状,应采取下列哪一措施() ["A.换用卡那霉素","B.换用耳毒性小的核糖霉素","C.换用丁胺卡那霉素","D.停用链霉素","E.减低剂量"]
角膜无血管,其营养代谢主要依靠() ["A.房水","B.泪膜","C.角膜内皮细胞","D.角膜上皮细胞","E.角膜缘血管网"]
皮肤中最丰富的必需脂肪酸是() ["A.神经酰胺","B.花生四烯酸","C.亚油酸","D.亚麻酸"]
影响心脏大血管形态的生理因素有_______、_______、_______、_______、_________、____________及________等。
右肺门上部由__________、_____________及____________________构成,其外缘由____________________形成,下部由__________________构成。