Any ship damaging a pipe could（）an immediate danger of fire.

Any firefighting equipment that is carried in addition to the minimum required must（）.

A.meet the applicable standards
B.be marked as additional equipment
C.be stowed in a separate area
D.All of the above

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Any extinguishing agent used on a Class C fire must have which important property?（）

A.Cooling ability
B.Leaves no residue
C.Penetrating power
D.Nonconductivity

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