A.course
B.track
C.direction
D.trend
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A.the apparatus
B.equipment
C.riggings
D.fittings
A.is
B.has
C.are
D.have
A.is
B.has
C.are
D.have
A.backup
B.blocking
C.choking
D.obstructing
A.on
B.in
C.out
D.with
最新試題
When steering by autopilot,how often should the steering be checked?（）
The mean draft of a ship is the draft（）.
Which of the following is not an operation mode of AIS?（）
ECDIS must be able to perform all of the following EXCEPT（）.
Which of the following is not a form of precipitation?（）
Manoeuvring information can not be obtained from（）.
Shipboard Emergency Drills must be carried out at least（）on board cargo ship.
It is dangerous for vessels without the operational radar（）the estuary.
A tide is called diurnal when（）.
When the wave period and the apparent rolling period are the same（）.