A.At least two years after the last entry
B.At least one year after the last entry
C.At least 90 days after the last entry
D.At least 30 days after the last entry
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A.LES
B.ESA
C.NCS
D.EGC
A.daily testing
B.either A or C
C.operational use of the equipment
D.testing at least every 48 hours
A.INMARSAT A
B.INMARSAT C
C.SafetyNET
D.NAVTEX
A.VHF
B.SART
C.NAVTEX
D.LES
A.Sea Area A1
B.Sea Area A2
C.Sea Area A3
D.Sea Area A4
最新試題
Every ship constructed on or after（）shall comply with all the applicable requirements of this chapter.
COSPAS-SARSAT is intended to be used for（）.
The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.
The rescue coordination center may（）on stations which interfere with traffic.
For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.
Monitoring is especially important in a highly automated system which is dependent on careful（）procedure and format.
SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.
In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.
On-scene communications will normally take place between（）.
Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.