[填空题] 脊髓灰质炎又称____________，病变主要在__________，表现为__________。

131I治疗GravEs病的作用机制是利用其发射的() ["A．X射线","B．α射线","C．β射线","D．γ射线","E．中微子"] 在接触麻疹后5天内立即给予__________，可预防麻疹发病。 一长期气管内插管患者，CT示气管明显增宽，气管壁变薄，最可能的诊断为() ["A．气管支气管巨大症","B．剑鞘样气管","C．气管支气管软化症","D．复发性多软骨炎","E．是正常支气管影像"] 99mTC的半衰期是() ["A．6．02小时","B．6．02天","C．1．658小时","D．50．55天","E．3．05天"] 下述支气管扩张的影像特点，错误的是() ["A．胸片正常可排除本病","B．环状或蜂窝状影","C．斑片状、索条样影","D．可有葡萄征、手套征","E．局部肺纹理增多"] 脊髓灰质炎又称____________，病变主要在__________，表现为__________。