胸腺瘤病人合并重症肌无力占百分比是() ["A．10%","B．15%","C．20%","D．25%","E．30%"]
胸腺瘤好发于() ["A．前下纵隔","B．中纵隔","C．后纵隔","D．前上纵隔","E．纵隔各部均可发生"]
一级医院()二级医院()三级医院() ["A．医院感染发生率≤8％","B．切口感染率≤0．5％","C．两者均是","D．两者均不是"]
乳腺导管内原位癌保留乳房手术后放射治疗时，照射() ["A．全乳+腋窝淋巴结","B．全乳","C．腋窝淋巴结区","D．锁骨上淋巴结区","E．内乳淋巴结区"]
解决乳腺癌锁骨上野与乳腺切线野邻接处剂量重叠问题，最好的方法是() ["A．两野之间有一定间隙","B．转机头方位角","C．转治疗床","D．半野铅挡块","E．半野照射"]
脊髓灰质炎()丙型肝炎()轮状病毒感染()合胞体病毒感染()
