Firefighting foam is only effective when the foam __________.(1.0)
A.penetrates to the bottom of the fire B.is kept saturated with low-velocity water fog C.mixes with the burning fuel oil D.completely covers the top of the burning liquid正确答案D
Firefighting foam is only effective when the foam __________.(1.0)
A.penetrates to the bottom of the fire B.is kept saturated with low-velocity water fog C.mixes with the burning fuel oil D.completely covers the top of the burning liquid正确答案D
