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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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