A.How is
B.How are
C.What is
D.What are
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A.easier to discharge
B.more difficult to discharge
C.easierto load
D.more difficult to load
A.at
B.in
C.on
D.to
A.turning maneuver
B.course setting
C.position fixing
D.regulating speed
A.stop
B.to stop
C.stopping
D.stopped
A.at
B.in
C.by
D.from
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Fog is likely to occur when there is little difference between the dew point and the（）.
It is dangerous for vessels without the operational radar（）the estuary.
The helm command PORT TWENTY means（）.
The ISM code is part of（）.
Which of the following shall not the officers in charge of the navigational watch do?（）
（）is halfway between the forward and after perpendiculars and is reference point for vessel construction.
The circulation around a low pressure center in the Northern Hemisphere is（）.
（）is on the panel of radar.
Your vessel is docking, but not yet alongside. Which line will be the most useful when maneuvering the vessel alongside the pier?（）.
The mean draft of a ship is the draft（）.