A.some times
B.often
C.at all times
D.seldom
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A.when was your vessel built
B.at what time is your vessel building
C.when is your vessel built
D.at what time you built your vessel
A.port of call
B.port of embarkation
C.port of destination
D.port of disembarkation
A.variation
B.compass error
C.deviation
D.earth's magnetic force
A.traffic separation schemes
B.recommended tracks
C.precautionary areas
D.inshore traffic zones
A.on
B.to
C.for
D.of
最新試題
Which of the following is not an operation mode of AIS?（）
Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its（）.
Manoeuvring information can not be obtained from（）.
Fog is likely to occur when there is little difference between the dew point and the（）.
Berthing means bringing a vessel to her berth until（）.
It is dangerous for vessels without the operational radar（）the estuary.
ECDIS must be able to perform all of the following EXCEPT（）.
Full details of all lights and fog signals are shown on（）.
A tide is called diurnal when（）.
The mean draft of a ship is the draft（）.