A.55.5 W
B.180E
C.15.5W
D.64.5E
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A.one means, whether satellite or terrestrial techniques
B.two means, whether satellite or terrestrial techniques
C.two separate and independent means, each using different radio communication services
D.two means, such as MF DSC and HF DSC
A.satellite /terrestrial system
B.INMAARSAT/COSPAS-SARSAT
C.SART / EPIRB
D.geostationary/polar-orbiting satellites
A.enable SAR operations to start with minimum delay
B.give facilities to marine communication
C.reduce sharply the chances of ship’s sinking
D.both A and C
A.occasionally
B.accidentally
C.often
D.usually
A.keep
B.kept
C.are keeping
D.have kept
最新試題
The advantage of geostationary satellites is（）.
The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.
Please use（）for（）.
SOLAS ships shall be equipped with（）.
（）will form the basis for distress alerting and safety calling.
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.
What following is not among the function of SOLAS ships?（）
Every ship constructed on or after（）shall comply with all the applicable requirements of this chapter.
In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.
Radio beacon can be activated（）in case of distress.