A.change course twenty degrees to the left
B.put the rudder left twenty degrees
C.put the rudder hard left for the first twenty degrees of swing
D.put the rudder left twenty degrees and then ease back as the vessel starts swinging
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A.counterclockwise
B.variable
C.clockwise
D.anticyclonic
A.within two hours
B.within three hours
C.within four hours
D.within five hours
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
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（）is the act of allocating space to containers on board of a container ship in the order of the discharge ports.
In the Northern hemisphere northerly winds may cause temperature（）.
Full details of all lights and fog signals are shown on（）.
A tide is called diurnal when（）.
Where would you find information about the time of high tide at a specific location on a particular day of the year?（）
（）is on the panel of radar.
Which wind results from a land mass cooling more quickly at night than an adjacent water area?（）
The helm command PORT TWENTY means（）.
Which of the following shall not the officers in charge of the navigational watch do?（）
When steering by autopilot,how often should the steering be checked?（）