A.low clouds
B.High clouds
C.Special clouds
D.medium clouds
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A.Low cl;ouds
B.High clouds
C.Special clouds
D.medium clouds
A.Cirrostratus
B.Cirrus
C.Cirrocumulus
D.Altostratus
A.Cirrostratus
B.Cirrus
C.Cirrocmulus
D.Altostratus
A.Tides
B.Sea
C.Swell
D.Wind
A.Falling barometric pressure
B.Rising barometric pressure
C.The circulations of winds
D.The change of wind direction
最新試題
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According to the relevant regulation, lifeboat should be powered by（）.
When the wave period and the apparent rolling period are the same（）.
Shipboard Emergency Drills must be carried out at least（）on board cargo ship.
The company should establish and maintain procedures to control all documents and date which are relevant to（）.
Manoeuvring information can not be obtained from（）.