A.at
B.in
C.by
D.from
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A.by grade
B.by a grade
C.by the grade
D.by the grades
A.in
B.as
C.to
D.with
A.in
B.up
C.above
D.on
A.by
B.with
C.on
D.in
A.one natutical mile
B.2 kilometers
C.5 cables only
D.one fathom
最新試題
It is dangerous for vessels without the operational radar（）the estuary.
Which of the following is not a form of precipitation?（）
Manoeuvring information can not be obtained from（）.
When steering by autopilot,how often should the steering be checked?（）
Fog is likely to occur when there is little difference between the dew point and the（）.
Berthing means bringing a vessel to her berth until（）.
Which of the following shall not the officers in charge of the navigational watch do?（）
The dew point temperature is（）.
How long are you prohibited to consume alcohol prior to serving as a member of a watch?（）
（）is on the panel of radar.