A.at all times
B.in the bottom return mode
C.in the volume reverberation mode
D.only when there is no current
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A.has left hand twist
B.has inside threads on both ends
C.has outside threads on both ends
D.takes two men to operate
A.dead reckoning
B.pilotage
C.great circle sailing
D.geographic navigation
A.blows the fire back toward the vessel
B.comes over the bow
C.comes over the stern
D.comes over either beam
A.cooling the outside bulkheads with water
B.shutting all sources of air into the compartment
C.closing the sea chest
D.flooding the compartment with salt water
A.contaminating food with extinguishing agent
B.shutting all sources of air into the compartment
C.closing the sea chest
D.a grease fire in the ventilation system
最新試題
Shipboard Emergency Drills must be carried out at least（）on board cargo ship.
（）is where the crew eat their meals.
（）is halfway between the forward and after perpendiculars and is reference point for vessel construction.
Which of the following shall not the officers in charge of the navigational watch do?（）
ECDIS must be able to perform all of the following EXCEPT（）.
Fog is likely to occur when there is little difference between the dew point and the（）.
Which of the following is not an operation mode of AIS?（）
（）is the act of allocating space to containers on board of a container ship in the order of the discharge ports.
The force resulting from the earth’s rotation that causes winds to deflect to the right in the Northern Hemisphere and to the left in the Southern Hemisphere is called（）.
A tide is called diurnal when（）.