单项选择题

Fire extinguishers used on ship’s are numbered by size I through V，with I being（）.

A.used for electrical fires only
B.the smallest
C.the most accessible
D.the most effective

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单项选择题

Fire dampers prevent the spread of fire by（）.

A.convection
B.conduction
C.radiation
D.direct contact

单项选择题

Fighting a rig fire in the ballast pumproom with hoses would adversely affect the stability of the rig most by（）.

A.increasing the permeability of the pumproom
B.reduction of drill water from the storage tanks
C.a list caused by water filling the compartment
D.a reduced KG caused by water filling the compartment

单项选择题

Fighting a rig fire in a watertight compartment with hoses could reduce the stability of the rig by（）.

A.progressive downflooding
B.reducing the level of drill water from the storage tanks
C.causing a list due to the water in the compartment
D.reducing the KG to minimum allowable