A.Condenses moisture
B.Provides overpressure protection
C.Purifies the air
D.Acts as an accumulator
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A.Stem
B.Pin
C.Box
D.Stand
A.An oxygen indicator
B.A combustible gas indicator
C.A combination combustible gas and oxygen indicator
D.A flame safety lamp
A.Carbon dioxide
B.Distilled water
C.Fresh water
D.Salt water
A.keep ports，doors，windows，and hatches closed
B.start engines immediately
C.ventilate before starting engine
D.None of the above
A.not
B.no
C.any
D.none
最新試題
What is the female section of a tool joint called? （）
While the Pilot is maneuvering the vessel to a dock，what is the PRIMARY responsibility of the watch officer?（）
You are on watch and the Pilot has the conn.The Master has temporarily gone below.The Pilot orders a course change which you are certain will put the vessel into imminent danger.Your first action should be to（）.
The Master to prosecute all voyages with the utmost（）and to render customary assistance with the Vessel’s Crew.
Which word indicates color variation in the characteristics of a light?（）
What is the function of an air receiver in the compressed air system on a ship? （）
If in any doubt as to the pilot’s actions or intentions，the officer in charge of the navigational watch shall（）.
You have orders to drop off a barge loaded with propylene oxide at a fleet.In doing so，you must ensure that（）.
Which statement describes the shore between Watch Hill Point and Point Judith? （）
Shipping society approved buoyant work vests are considered to be items of safety equipment and may be worn by members of the crew（）.