A.The marine sextant
B.The chronometer
C.The echo sounder
D.The radar
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A.are tracked on reciprocal bearings
B.are tracked at the same range
C.are tracked on the same bearing
D.pass closely to each other
A.the vapor and air mixture is too rich
B.it is mixed with certain proportions of air
C.the vapor is too little compared to the air
D.it is of heavy toxicity
A.manifold
B.remote pull box
C.discharge nozzle
D.machinery space
A.AIS
B.SSAS
C.SSP
D.SART
A.Maintain balance and move with agility
B.Climb up and down vertical ladders and stairways
C.Open and close watertight doors
D.Take part in vessel evacuation procedures
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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?（）
（）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?（）.
Manoeuvring information can not be obtained from（）.
（）is the act of allocating space to containers on board of a container ship in the order of the discharge ports.
Berthing means bringing a vessel to her berth until（）.
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?（）
The ISM code is part of（）.