海船船员考试
单选题On a class B fire，which portable fire extinguisher would be the LEAST desirable?（）A Carbon dioxideB Water (stored pressure)C Dry chemicalD Foam
题目
Carbon dioxide
Water (stored pressure)
Dry chemical
Foam
相似问题和答案
第1题：
A portable foam (stored-pressure type) fire extinguisher would be most useful in combating a fire in ______.
A.generators
B.oil drums
C.the bridge controls
D.combustible metals
便携式泡沫储备气压式灭火器最适宜扑灭油桶火。
第2题：
Under what conditions would the use of a Class C fire extinguisher be preferable to a Class A extinguisher? C类火灾灭火器比A类灭火器更适用于以下哪一种情况？（）
- A、A .When the fire involves paper products当火灾和纸制品有关时
- B、B .When the fire is caused by flammable products当火灾由易燃物造成
- C、C .When the fire involves electrical equipment当火灾和电器设备有关时
- D、D .When the fire is in an enclosed area当火灾发生在一个封闭空间内
正确答案:C
第3题：
A foam-type portable fire extinguisher is most useful in fighting a fire in ______.
A.generators
B.oil drums
C.the bridge controls
D.combustible metals
便携式泡沫灭火器对扑灭油桶着火最有效。
第4题：
Dry chemical
Halon
Low velocity fog
Steam
第5题：
turning it upside down
pressing the foam lever
squeezing the grip handle
opening the hose valve
第6题：
All portable fire extinguishers must be capable of being ______.
A.carried by hand to a fire
B.carried or rolled to a fire
C.recharged in the field
D.used on class “B” fire
所有便携式灭火器必须能够被用手携带到火灾（现场）。
第7题：
Fire in the cabins. Close all fire doors and use the （）powder extinguisher.
- A、dry
- B、wet
- C、foam
- D、portable
正确答案:A
第8题：
A foam-type portable fire extinguisher would be most useful in combating a fire in ______.
A.solid materials such as wood or bales of fiber
B.flammable liquids
C.a piece of electrical equipment
D.combustible metallic solid
便携式泡沫灭火器对扑灭可燃液体着火最有效。
第9题：
generators
oil drums
the bridge controls
combustible metals
第10题：
A fire
B fire
C fire
D fire