單項選擇題When engaged on international voyages, ships of 1600 tons gross tonnage and upwards shall be fitted with a（）.
A.radio direction-finding apparatus
B.DSC
C.NAVTEX
D.EPIRB
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1.單項選擇題The maritime access code of telephone mode in INMARSAT-A terminal for the AOR(W) is（）.
A.871
B.872
C.873
D.874
2.單項選擇題In Inmarsat-A, “Priority 0” means（）communication.
A.routine
B.distress
C.urgency
D.safety
最新試題
For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.
題型：單項選擇題
Radiotelephony communication or radio telex communication or both will be carried out by terrestrial or satellite means,（）the equipment fitted on ship and the area in which the incident occurs.
題型：單項選擇題
Radio beacon can be activated（）in case of distress.
題型：單項選擇題
Can MF/HF radiotelephone receive the MSI sent from the coast stations alone?（）
題型：單項選擇題
COSPAS-SARSAT is intended to be used for（）.
題型：單項選擇題