单项选择题
Which device provides the main means in the GMDSS for locating ships in distress or their survival craft（）.
A.Radio direction finder
B.Satellite EPIRBs
C.MF/HF DSC
D.VHF homing device
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相关考题
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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 -
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 -
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
