A.week
B.month
C.crew change
D.other week
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A.posted with instructions on the operation of the system
B.ventilated and equipped with explosion-proof switches
C.painted with red and black diagonal stripes
D.equipped with a battery powered source of emergency lighting
A.Carbon dioxide
B.Water (stored pressure)
C.Dry chemical
D.Foam
A.deteriorate and give off noxious gasses
B.spontaneously heat and catch fire
C.attract lice and other vermin and serve as a breeding ground
D.None of the above
A.fire-main system
B.feed-water system
C.freshwater sanitary system
D.domestic water tank
A.two rockets，one of which shall be the buoyant type
B.three rockets，one of which shall be the buoyant type
C.four rockets，two of which shall be the buoyant type
D.five rockets，two of which shall be the buoyant type
最新試題
On a ship，firefighting equipment must be inspected once every（）.
After abandoning ship，you should deploy the sea anchor from a liferaft to（）.
On a class B fire，which portable fire extinguisher would be the LEAST desirable?（）
The falls on gravity davits are（）.
How many life buoys have your ship been exactly（）.
On a ship，how many ring buoys are required to have a buoyant line attached?（）
Oily rags stored in a pile that is open to the atmosphere are a hazard because they may（）.
How should the lifeboat sea painter be rigged?（）
During a fire drill on a ship，what action is required?（）
Line throwing apparatus aboard ship must contain（）.