A.from
B.to
C.on
D.for
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A.have
B.have been
C.has been
D.has
A.in
B.on
C.from
D.at
A.must
B.have to
C.must be
A.come in
B.come on
C.come
A.late
B.latest
C.last
最新試題
The ISM code is part of（）.
The dew point temperature is（）.
Bales close to the deckhead should be covered to prevent（）.
Your vessel is docking, but not yet alongside. Which line will be the most useful when maneuvering the vessel alongside the pier?（）.
When steering by autopilot,how often should the steering be checked?（）
The circulation around a low pressure center in the Northern Hemisphere is（）.
How long are you prohibited to consume alcohol prior to serving as a member of a watch?（）
A tide is called diurnal when（）.
Full details of all lights and fog signals are shown on（）.
Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its（）.