需要时(限用1次，12小时内有效)()停止() ["A．q．o．D","B．s．o．s","C．DC","D．p．r．n","E．p．C．"]
寻常型天疱疮的皮损可发生于() ["A．口腔","B．胸背部","C．头颈部","D．臀部"]
关于胶片特性曲线的叙述，正确的是() ["A．是描绘曝光量与所产生密度之间关系的一条曲线","B．曲线可以表示出感光材料的物理性能","C．胶片特性曲线也称H-D曲线","D．曲线的横坐标为曝光量，纵坐标为密度","E．曲线的横坐标为密度，纵坐标为曝光量"]
眼底可见骨细胞样色素沉着()不是一个独立疾病()病变主要在黄斑部，且无特殊治疗()手术是主要治疗方法()常有反复玻璃体出血() ["A．裂孔性视网膜脱离","B．Stargardt病","C．视网膜色素变性","D．Eales病","E．黄斑囊样水肿"]
产生X线必须具备的条件是() ["A．光电管","B．电子源","C．旋转阳极","D．适当的障碍物(靶面)","E．高压电场和真空条件下产生的高速电子流"]
解除支气管痉挛用()减轻呼吸道黏膜水肿用()
