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

查看正确答案

更多“The class of fire on which a blanketing effect is essential to extinguish the fire is （）.”相关的问题

第1题

[单选题] The success of an indirect attack on a fire depends on the（）.

A、size of the fire when initially observed B、complete containment of the fire C、cooling ability of the firefighting agent D、class of the fire

点击查看答案

第2题

[单选题] Halon from extinguishers used on a class B fire，should be directed（）.

A、at the top of the flames B、at the base of the fire near the edge C、in short quick bursts D、toward the upwind side of the fire

点击查看答案

第3题

[单选题] The disadvantage of using CO2 is that the（）.

A、CO₂ does not cool the fire B、cylinders are regulated pressure vessels C、C0₂ is not effective on class B fires D、C0₂ is not effective on class C fires

点击查看答案

第4题

[] Halon extinguishers used on a class C fire should be directed at the（）.

A、A.base of the equipment B、B.top of the equipment C、C.power source D、D.source of the fire

点击查看答案

第5题

[单选题] The straight stream capability of an all-purpose nozzle is used in fighting a class A fire to（）.

A、shield fire fighters from radiant heat B、break up burning material C、get the most water possible on the fire D、drive heat and smoke ahead of the fire fighters

点击查看答案

第6题

[单选题] The usual method of effectively applying foam on a fire is by （）.

A、spraying directly on the base of the fire B、flowing the foam down a vertical surface C、sweeping the fire before you with the foam D、spraying directly on the surface of the fire

点击查看答案

第7题

[单选题] The BEST method of applying foam to a fire is to（）.

A、spray directly on the base of the fire B、flow the foam down a nearby vertical surface C、sweep the fire with the foam D、spray directly on the surface of the fire