单选题Fire extinguishers used on ship’s are numbered by size I through V，with I being（）.Aused for electrical fires onlyBthe smallestCthe most accessibleDthe most effective
单选题
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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