A.the information can be received on an ordinary FM radio
B.warnings are printed out for reading when convenient
C.broadcasts are at scheduled times
D.a low frequency band is used for long distance transmission
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A.submarine EPIRB
B.safety EPIRB
C.ship EPIRB
D.survival craft EPIRB
A.is primarily designed for vessels operating up to 50 miles offshore or on foreign waters
B.transmits a signal that can be detected by satellite
C.must be manually activated
D.operates in the medium and low frequency bands
A.approved by the CCS
B.designed for float free，automatic activation
C.operated on 121.5/243 MHz
D.operated manually
A.a safety line attached to a man working over the side
B.used to measure water depth
C.used to slow the headway of a barge
D.used to measure the overhead height of a bridge
A.What
B.How
C.Which
D.When
最新試題
We consider（）send a helicopter with medical facilities to the distress area.
For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.
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.
All coast radio stations（）DSC installed for VHF and HF.
COSPAS-SARSAT is intended to be used for（）.
SOLAS ships shall be equipped with（）.
Please use（）for（）.
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.
Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.
Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.