单项选择题
Distress and safety communications following DSC calling will be performed by radiotelephony or（）.
A.NBDP
B.EGC receiver
C.NBDP or both
D.EGC receiver or both
点击查看答案&解析
相关考题
-
单项选择题
If a ship station relays a DSC distress call to an appropriate coast station, it means that（）.
A.the ship has received the DSC distress call on a HF frequency
B.the coast station concerned has not acknowledged it within 5 minutes
C.the ship will take command of search and rescue in 5 minutes
D.A and B -
单项选择题
After has permit the commissioning, the（）will permit the SES access to system.
A.INMARSAT
B.IMO
C.MSC
D.CES -
单项选择题
There are（）NCSs in total, one in each ocean region, the AOR (E and W), IOR and POR.
A.3
B.2
C.1
D.4
