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 small boat，which knot is best suited for attaching a line to the ring of an anchor?（）
Safe water buoys may show ONLY（）.
In addition to the life jackets stowed at each berth location，life jackets must be stowed at each watch station and（）.
Each lifeboat must be lowered and maneuvered in the water at least once every（）.
On a class B fire，which portable fire extinguisher would be the LEAST desirable?（）
The sea painter is secured in the lifeboat by（）.
Safety goggles or glasses are NOT normally worn when（）.
If absolutely necessary，the best way to land on a beach in a motor lifeboat is to（）.
On a ship，a fire drill shall be conducted once every（）.
During the required periodic abandon ship drill aboard a ship，each person not assigned duties in the muster list is（）.