常用于海洛因依赖替代治疗的是（）
A.苯二氮䓬类药物
B.美沙酮
C.纳洛酮
D.可乐定
E.氟哌啶醇
参考答案：B
John had planned to make a compromise， but he changed his mind at the last minute.
A．anyhow
B．otherwise
C．therefore
D．somehow
腰间盘突出症与椎管内肿瘤最有鉴别意义的辅助检查是
A．X线片
B．CT
C．MIR
D．肌电图
E．超声波
