A.Cirrostratus
B.Cirrus
C.Cirrocumulus
D.Altostratus
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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
A.The persence of cirrus clouds
B.The low-hanging stratus clouds
C.The altocumulus clouds
D.The massive cumulus clouds
A.The persence of cirrus clouds
B.The low-hanging stratus clouds
C.The altocumulus clouds
D.The massive cumulus clouds
最新試題
（）is on the panel of radar.
A tide is called diurnal when（）.
When the wave period and the apparent rolling period are the same（）.
The helm command PORT TWENTY means（）.
It is dangerous for vessels without the operational radar（）the estuary.
ECDIS must be able to perform all of the following EXCEPT（）.
Bales close to the deckhead should be covered to prevent（）.
In the Northern hemisphere northerly winds may cause temperature（）.
When steering by autopilot,how often should the steering be checked?（）
According to the relevant regulation, lifeboat should be powered by（）.