A.HF
B.VHF
C.MF
D.MF/HF
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A.518
B.2182
C.156.8
D.2187.5
A.1 February 1995
B.1 February 1992
C.1 July 1997
D.1 February 1999
A.MF/HF
B.SART
C.EPIRB
D.any of A, B, C
A.only automatically
B.only manually
C.both automatically and manually
D.only by remote control
A.be damaged
B.work normally regardless of harmful conditions
C.not wok though it is not in a bad condition
最新試題
Before GMDSS, if the radio officer on board is serious ill,（）.
Radio beacon can be activated（）in case of distress.
SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.
In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.
At least two two-way VHF radiotelephone apparatus shall be provided on every cargo ship of（）tons gross tonnage and upwards but less than 500 tons gross tonnage.
SOLAS ships shall be equipped with（）.
COSPAS-SARSAT is intended to be used for（）.
All coast radio stations（）DSC installed for VHF and HF.
For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.
（）will form the basis for distress alerting and safety calling.