外界气压降低时，机体中氮的脱饱和最慢的组织是() ["A．血液","B．淋","C．脂肪","D．肌肉","E．脑灰质"]
先天性水痘
常压下连续吸纯氯的安全时限为() ["A．4～6小时","B．8～12小时","C．12～24小时","D．24～48小时","E．48小时以上"]
硬管支气管镜检查，受检者取仰卧位，肩部与手术台前沿平齐，助手固定受检者头部，开始进镜时应将头后仰并高出手术台平面约() ["A．5cm","B．10cm","C．15cm","D．20cm","E．25cm"]
水痘(chickenpox，varicella)
重症水痘
