颈椎压缩骨折合并脱位最先选择的治疗方法是（）
A.颅骨牵引
B.手法复位、石膏固定
C.颌枕带牵引
D.两桌法复位
E.切开复位
参考答案：A
In duty calculation, in case the CIF price of imports is in terms of foreign currency, it shall be converted into ______.
A．another foreign currency quoted
B．RMB at buying price quoted
C．RMB at selling price quoted
D．RMB at the middle price between the buying and selling prices quoted
（）负责受理全路与GSM-R系统共用设备有关的GSM-R业务故障，并负责组织其他相关GSM-R核心网机房进行故障处理。
A.北京核心节点
B.武汉核心节点
C.西安核心节点
D.郑州核心节点
