吸入高浓度氧或吸氧时间过长，可能引起早产儿() ["A．视网膜病","B．支气管肺发育不良","C．颅内出血","D．肺动脉高压","E．早产儿应常规吸氧"]
尿中哪些因素可影响用尿比密计测定尿比密?
音强与下列哪个因素直接相关() ["A．声带长度","B．声门下压","C．声门下容积","D．声带紧张度","E．声带厚度"]
新生儿窒息的病因有() ["A．母亲患糖尿病、心衰、严重贫血","B．胎盘功能不足","C．脐带绕颈、打结","D．急产","E．宫内窘迫"]
甲状腺功能测定的试验包括：①____________，②_______________，③_____________。
如何检查新购尿比密计的准确性?
