右主支气管水平奇静脉直径正常为() ["A．3～4mm","B．4～5mm","C．5～6mm","D．6～7mm","E．5～8mm"]
风湿热的主要表现为___________、_________、________、________、__________。
CT发现侵袭性胸腺瘤侵犯纵隔脂肪，肿瘤为() ["A．一期","B．二期","C．三期","D．四期","E．五期"]
正常胸部CT升主动脉与降主动脉横径比为() ["A．0.5:1","B．1:1","C．1.5:l","D．2:1","E．2.5:1"]
Wiskott-Aldrich综合征，临床特征为________、_______、_________。
过敏性紫癜，临床特点是______、________、_________、_________。
