A.easy/reliable
B.difficult/cheap
C.stable/compulsory
D.easy/expensive
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A.MCC/LUT/RCC
B.LUT/MCC/RCC
C.LUT/RCC/MCC
D.LUT/RCC/LUT
A.at sea
B.on land
C.in the air
D.throughout the world
A.COSPAS-SARSAT
B.ground receiving stations
C.spacecraft
D.satellite SAR instrument
A.anywhere in the world
B.at sea
C.in the air
D.ashore
A.1982
B.1980
C.1984
D.1988
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The frequency（）the safety message will be transmitted shall be included in DSC safety call.
In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.
Every lifeboat which is fitted with a fixed two-way（）radiotelephone apparatus with an antenna which is separately mounted shall be provided with arrangements for sitting and securing the antenna effectively in its operating position.
On-scene communications will normally take place between（）.
The priority of EGC messages is classified by（）.
Radio beacon can be activated（）in case of distress.
Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.
Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.
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.
（）will form the basis for distress alerting and safety calling.