A.a dummy antenna
B.a supporting facilities
C.a back-up equipment
D.an antenna
您可能感興趣的試卷
你可能感興趣的試題
A.one-way
B.two-way
C.double-effect
D.one-effect
A.distress
B.urgent
C.safety
D.general
A.call sign
B.port of register
C.radio name
D.signal label
A.EPIRB
B.SART
C.Mobile Station
D.Distress Alerting
A.COSPAS-SARSAT
B.ground receiving stations
C.storing distress signal
D.Near polar orbiting satellites
最新試題
Radio beacon can be activated（）in case of distress.
The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.
If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.
Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.
COSPAS-SARSAT is intended to be used for（）.
Can MF/HF radiotelephone receive the MSI sent from the coast stations alone?（）
On-scene communications will normally take place between（）.
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.
SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.
SOLAS ships shall be equipped with（）.