A.three months
B.six months
C.twelve months
D.eighteen months

A.where oil or chemical drums are stored
B.in all battery storage locations
C.in paint lockers
D.in all of the above locations

A.week
B.month
C.crew change
D.other week

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

A.the cap should be removed to drain the boat when it is waterborne
B.the cage must be free of rubbish or the ball may not seat properly
C.there is an automatic ball check located in a siphon tube
D.the small lever to release the rubber ball float must be turned counterclockwise

A.Frapping line
B.Tricing line
C.Rottmer release
D.Winch remote control wire

A.the mess room
B.each lifeboat
C.each industrial work site
D.each fire station