單項選擇題In Inmarsat-A, “Priority 3” means（）communication.
A.routine
B.distress
C.urgency
D.safety
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1.單項選擇題Who has permit the SES enter the system after successful commissioning?（）
A.Network
B.The CES preferred by the applicant
C.INMARSAT
D.The SES itself
2.單項選擇題After successful commissioning, the（）will permit the SES access to system.
A.INMARSAT
B.IMO
C.MSC
D.CES
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The priority of EGC messages is classified by（）.
題型：單項選擇題
The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.
題型：單項選擇題
COSPAS-SARSAT is intended to be used for（）.
題型：單項選擇題
What following is not among the function of SOLAS ships?（）
題型：單項選擇題
Please use（）for（）.
題型：單項選擇題