____________是哮喘的基本特征，_____________是哮喘的基本病变。
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___________、_________、________、________、__________。
化学成分为齐墩果酸的药材是() ["A．山茱萸","B．酸枣仁","C．酸橙","D．女贞子","E．乌梅"]
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"]
川崎病的主要死因为____________
