海船船员考试
单选题Which is a disadvantage of Halon as a fire extinguishing medium?（）A Conducts electricityB Difficult to storeC Large volume necessary to be effectiveD Ineffective in powdered metal fires
题目
Conducts electricity
Difficult to store
Large volume necessary to be effective
Ineffective in powdered metal fires
相似问题和答案
第1题：
An extinguishing agent which effectively cools, dilutes combustible vapors, removes oxygen, and provides a heat and smoke screen is ______.
A.carbon dioxide
B.Halon 1301
C.dry chemical
D.water fog
具有有效的冷却，稀释可燃性气体，移除氧气并提供热和烟的保护层的灭火剂是水雾。
第2题：
CO2 and Halon extinguishers are used for electrical fire, as well as （）fire.
- A、common
- B、oil
- C、electrical
- D、chemical
正确答案:B
第3题：
Halogenated hydrocarbon， Halon in short form，is used on board ship as ________ ．
A.fire-extinguishing medium
B.a standard fire test
C.a non-combustible material
D.a fire main
第4题：
Fires in electrical equipment
Flammable oils and greases
Class A fires in ordinary combustibles
Materials containing their own oxygen
第5题：
Alcohol foam
Dry chemical
Chemical foam
Water fog
第6题：
Which of the following is a class A fire?下列哪一项是A类火灾（）
- A、Halon 卤化烃(二氟二氯甲烷)
- B、electrical 电气类
- C、liquid 液体类
正确答案:D
第7题：
Deep-fat cooking equipment shall be fitted with the following:（）
- A、An automatic or manual fixed extinguishing system tested to an appropriate standardacceptable to the Organization
- B、Controls for manual operation of the fire-extinguishing system which are clearlylabeled for ready use by the crew
- C、Arrangements for automatically shutting off the electrical power upon activation of thefire-extinguishing system
- D、an alarm for indicating operation of the fire-extinguishing system in the galley wherethe equipment is installed
正确答案:A,B,C,D
第8题：
A galley grease fire on the stove may be extinguished using______．
A.water
B.foam
C.the range hood extinguishing system
D.fire dampers
发生在炉上的厨房油火可使用有作用距离的灭火系统扑灭。
第9题：
Electrically non-conductive
Relatively inexpensive
Effective against chemicals containing an oxidizer
All of the above
第10题：
preventing oxygen from reaching the burning material
cooling the burning material below its ignition temperature
using the extinguishing agent to make the burning material fire-resistant
using the extinguishing agent to absorb the heat