A foam-type portable fire extinguisher is most useful in fighting a fire in ______.
A.generators
B.oil drums
C.the bridge controls
D.combustible metals
正确答案：B
便携式泡沫灭火器对扑灭油桶着火最有效
Afoam-typeportablefireextinguisherismostusefulinfig
本文来自网络，不代表煤炭资讯立场。转载请注明出处： http://www.mtxh.cn/zh/346852.html
