通信部门负责提供空中交通管制部门与飞行中的航空器之间的空/地无线电话音通信服务。

通信部门负责提供空中交通管制部门与飞行中的航空器之间的空/地无线电话音通信服务。
A、ThecommunicationunitsprovidetheF/TradiotelephonycommunicationservicesbetweenATCunitsandaircraftinflight.
B、ThecommunicationunitsprovidetheA/GradiotelephonycommunicationservicesbetweenATCunitsandaircraftinflight.
C、ThecommunicationunitsprovidetheA/TradiotelephonycommunicationservicesbetweenATCunitsandaircraftinflight.
D、ThecommunicationunitsprovidetheF/GradiotelephonycommunicationservicesbetweenATCunitsandaircraftinflight.
正确答案：B