问题
单项选择题
A portable foam (stored-pressure type) fire extinguisher would be most useful in combating a fire in（）.
A.generators
B.oil drums
C.the bridge
D.combustible metals
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
A portable foam (stored-pressure type) fire extinguisher would be most useful in combating a fire in（）.
A.generators
B.oil drums
C.the bridge
D.combustible metals
参考答案：B