A.a dummy antenna
B.a supporting facilities
C.a back-up equipment
D.an antenna
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A.HF
B.VHF
C.MF
D.MF/HF
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
最新試題
Can MF/HF radiotelephone receive the MSI sent from the coast stations alone?（）
As each MSI message will have a unique identity, the printing of messages already received correctly is（）.
Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.
International Navtex service means the coordinated broadcast and automatic reception on（）khz of maritime safety information by narrow-band direct-printing telegraphy using English language.
COSPAS-SARSAT is intended to be used for（）.
If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.
The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.
On-scene communications will normally take place between（）.
Before GMDSS, if the radio officer on board is serious ill,（）.
The advantage of geostationary satellites is（）.