单项选择题

The class of fire on which a blanketing effect is essential to extinguish the fire is （）.

A.class A
B.class B
C.class C
D.class D

点击查看答案&解析

上一题目录下一题

相关考题

单项选择题

Which of the listed classes of fire is considered as one involving electrical equipment?（）

A.Class "A"
B.Class "B"
C.Class "C"
D.Class "D"

单项选择题

Besides heat, fuel, and oxygen, which of the following is necessary for a fire to exist?（）

A.Chain reaction
B.Thermal action
C.Chemical occlusion
D.Pyrotechnical reaction

单项选择题

A fire and boat drill on a tank vessel shall, by regulation, include （）.

A.starting the fire pumps
B.checking firemans outfits and other personnel rescue equipment
C.checking relevant communications equipment
D.All of the above