厚朴药材表面白色结晶为（）和厚朴酚的结晶。
参考答案：厚朴酚及
______ the airport, he was arrested（逮捕） by the police.
A．As soon as arriving
B．Upon he arrived
C．On arriving
D．Upon arriving at
股动脉枪击音
A．室间隔缺损 B．房间隔缺损 C．动脉导管未闭 D．法洛四联症 E．肺动脉狭窄
