新生儿硬肿症的临床表现有() ["A．反应差，哭声低微","B．体温不升","C．皮下脂肪积聚部位硬肿","D．常合并肺炎，败血症","E．心音低钝"]
临床上先天性喉软骨畸形的主要表现是() ["A．一般无症状，偶然发现","B．声嘶","C．呼吸困难","D．吞咽困难","E．喉喘鸣"]
咯血与呕血的鉴别要点是什么？
咯血
新生儿硬肿症的发病机制有() ["A．体温调节中枢功能不全","B．体表面积相对大","C．皮下脂肪层薄、易散热","D．皮下脂肪中不饱和脂肪酸含量大，受寒时易凝固","E．早产"]
声音嘶哑
