A.within two hours
B.within three hours
C.within four hours
D.within five hours
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A.to get
B.to approach
C.to proceed
D.to close
A.damage by dripping sweat
B.damage by odor contamination
C.from striking structure
D.from steel rusty
A.pressure gradient
B.Coriolis effect
C.aurora borealis
D.ballistic deflection
A.12 times on each watch
B.When time allows
C.At least once a watch
D.No checking is necessary
A.Container loading
B.Container discharging
C.Stowage planning
D.Container checking
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ECDIS must be able to perform all of the following EXCEPT（）.
When the wave period and the apparent rolling period are the same（）.
How long are you prohibited to consume alcohol prior to serving as a member of a watch?（）
When steering by autopilot,how often should the steering be checked?（）
The circulation around a low pressure center in the Northern Hemisphere is（）.
What is a CORRECT reply to a pilot’s request, How’s your heading?（）
A tide is called diurnal when（）.
Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its（）.
In the Northern hemisphere northerly winds may cause temperature（）.
The ISM code is part of（）.