A.keeping a close watch and lookout
B.taking a radar range and bearing
C.observing a radar target and listening to signals
D.keeping a well clear caution
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A.from
B.on
C.in
D.of
A.a continuous ringing for 10 seconds
B.one short ring followed by one long ring
C.two long rings of at least 20 seconds
D.a continuous ringing until the fire is extinguished
A.gives up
B.gives away
C.gives in
D.gives off
A.the chief engineer
B.the person about whom the entry concerns
C.one other crew member
D.no other signature is required
A.base
B.under part
C.bottom
D.down place
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（）is on the panel of radar.
Berthing means bringing a vessel to her berth until（）.
（）is where the crew eat their meals.
Fog is likely to occur when there is little difference between the dew point and the（）.
Full details of all lights and fog signals are shown on（）.
Which of the following is not an operation mode of AIS?（）
According to the relevant regulation, lifeboat should be powered by（）.
A tide is called diurnal when（）.
Shipboard Emergency Drills must be carried out at least（）on board cargo ship.
The circulation around a low pressure center in the Northern Hemisphere is（）.