问题
单项选择题
A large oil fire on the deck of a ship can be fought most effectively with（）.
A.dry chemical
B.foam
C.high-velocity fog
D.water
答案
参考答案：B
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A large oil fire on the deck of a ship can be fought most effectively with（）.
A.dry chemical
B.foam
C.high-velocity fog
D.water
参考答案：B