A.on
B.in
C.for
D.at
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A.Conduction of heat to adjacent surfaces
B.Direct radiation
C.Convection
D.All of the above
A.two balls in a vertical line
B.two diamonds in a vertical line
C.a single black ball
D.no shape is shown during the day
A.stronger than during the summer months
B.weaker than during the summer months
C.drier than during the summer months
D.wetter than during the summer months
A.six weeks
B.six months
C.twelve months
D.two years
A.used for electrical fires only
B.the smallest
C.the most accessible
D.the most effective
A.Lightning in the vicinity
B.An approaching squall line
C.A fire on the pier
D.All of the above
A.used only for pollution response
B.owned and operated by the US government
C.used only within a barge fleeting area
D.used only on inland waters
A.start the mechanical ventilation system for the engine room
B.operate the fuel shut-off for the engine room
C.operate all fire extinguishing equipment aboard the vessel on board the vessel，including starting the fire pump
D.All of the above
A.north and increasing
B.north and decreasing
C.south and increasing
D.south and decreasing
A.have a design burst pressure of at least 25 psig
B.be capable of withstanding at least 2.0 psi vacuum without collapsing or constricting
C.be electrically continuous with a maximum resistance of ten thousand ohms
D.All of the above
最新試題
Fighting a rig fire in the ballast pumproom with hoses would adversely affect the stability of the rig most by（）.
Each EPIRB required on a ship shall be stowed in a manner which will permit（）.
Fighting a rig fire in a watertight compartment with hoses could reduce the stability of the rig by（）.
Fire protection and manning regulations for towing vessels state that the Master or person in charge must ensure that all crew members who have not participated in the drills or received the safety orientation（）.
During which condition should the operator of a pedestal crane shutdown operations?（）
Foam-type portable fire extinguishers are most useful in combating fires involving（）.
Each drilling unit equipped with helicopter fuel storage tanks must have the tanks installed as far as practicable from the（）.
Fire dampers prevent the spread of fire by（）.
Fire in an engine compartment is best extinguished with carbon dioxide gas (CO2) and by（）.
Fire extinguishers used on ship’s are numbered by size I through V，with I being（）.