单项选择题
A.Radio direction finder B.Satellite EPIRBs C.MF/HF DSC D.VHF homing device
Which action should be taken on receipt of a GMDSS dist...
单项选择题Which action should be taken on receipt of a GMDSS distress alert（）.
A.Read the display screen and/or printout B.Silence the alarm C.Listen for any follow up voice/telex transmission on the appropriate frequency D.All of the above
Where should the GMDSS radio log be kept on board ship（...
单项选择题Where should the GMDSS radio log be kept on board ship（）.
A.In the Captain's office B.In the sea cabin C.At the GMDSS operating position D.Anywhere on board the vessel
When the GMDSS Radio Operator on watch hears“SECURITE”s...
单项选择题When the GMDSS Radio Operator on watch hears“SECURITE”spoken three times he can expect to receive a message concerning（）.
A.The safety of navigation or important meteorological warnings B.The safety of a vessel or a person is in jeopardy C.A vessel in need of immediate assistance D.A coast station traffic list
