Portable foam type fire extinguishers are
题型:单项选择题
问题:
Portable foam type fire extinguishers are most effective on().
A.mattress fires
B.oil fires
C.wood fires
D.All of the above
Portable foam type fire extinguishers are most effective on().
A.mattress fires
B.oil fires
C.wood fires
D.All of the above