机场管理机构负责在()小时内向民航地区管理局公安局报告发生的重大交通事故和车辆碰撞航空器事故。
A.12
B.24
C.48
参考答案:B
---Does China have cultural relics?
--- Yes, it is admitted that many cultural relics in the world, such as the Great Wall, the Potala Palace, the Magao Caves and so on, ______ China.
A.belongs to
B.are belonging to
C.belonged to
D.belong to
哪个逻辑信道用于通过空中接口向运行中的MS发送系统信息()。
A.FACCH
B.SDCCH
C.SACCH