A.they all have different limitations with respect to coverage
B.they all have different limitations in the technology they use
C.different systems apply to different ships
D.all of above
您可能感興趣的試卷
你可能感興趣的試題
A.Inmarsat-A
B.Inmarsat-B
C.Inmarsat-C
D.Inmarsat-F
A.Search and rescue authorities ashore will rapidly received an distress alert and acted upon
B.SAR units will be rapidly alerted to a distress incident and assist in a coordinated SAR operation
C.Ships navigating in the immediate vicinity of the ship in distress will rapidly alerted to the alert and give their help accordingly
D.The RCC will rapidly alerted to a distress alert through satellite and terrestrial communication techniques and conducted a rescue operation immediately
A.no matter where they are and what time it is
B.at scheduled time and in major ocean regions
C.at fixed time and position
D.when they get permission
A.be responsible for
B.have an impact on
C.command
D.give a guidance to
A.identity
B.identical
C.identify
D.identification
最新試題
If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.
SOLAS ships shall be equipped with（）.
The priority of EGC messages is classified by（）.
Distress traffic is the communication（）between the station in distress and the ships, aircraft, coast radio stations, coast earth stations and rescue centers participating in the rescue work.
The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.
Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.
The frequency（）the safety message will be transmitted shall be included in DSC safety call.
Please use（）for（）.
We consider（）send a helicopter with medical facilities to the distress area.
Every lifeboat which is fitted with a fixed two-way vhf radiotelephone apparatus with（）which is separately mounted shall be provided with arrangements for sitting and securing the antenna effectively in its operating position.