单项选择题
The maritime access code of telephone mode in INMARSAT-A terminal for the AOR(W) is（）.
A.871 B.872 C.873 D.874
单项选择题 In Inmarsat-A, “Priority 0” means（）communication.
单项选择题 The maritime access code for the IOR is（）in INMARSAT-A Telex Service.
单项选择题 In Inmarsat-A, “Priority 3” means（）communication.
