酚苄明
A．α受体B．β受体C．α受体和β受体D．多巴胺受体E．以上均不是下列药物分别作用于哪种受体
参考答案：A
With the _____ of making a fortune, many people went to Australia in the 19th century
to wash sand for gold. [ ]
A. task
B. intention
C. trade
D. appointment
可动心轨道岔检查时1/12、1/18道岔导曲线中部直曲股轨距、水平测量（）处。
