单项选择题
Any ship with SES can（）and（）through the Inmarsat satellites when sending a distress alert.
A.enter the system rapidly / wait for rescue B.have an absolute priority to enter the system / contact with a CES C.establish contact with the RCC / enter the port D.enter the system gradually / get the rescue
单项选择题 The Network Coordination station for the INMARSAT-A coast stations in the Pacific ocean region is in（）.
单项选择题 The NCS of INMARSAT-A system in the IOR is in（）.
单项选择题 The GMDSS defines four sea area based on the（）.
