海船船员考试

单选题0ne of the limitations of foam as an extinguishing agent is that foam（）.A cannot be made with salt waterB is heavierthan oil and sinks below its surfaceC is corrosive and to fire fightersD conducts electricity

题目
单选题
0ne of the limitations of foam as an extinguishing agent is that foam（）.
A

cannot be made with salt water

B

is heavierthan oil and sinks below its surface

C

is corrosive and to fire fighters

D

conducts electricity

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相似问题和答案

第1题：

______, as the chemical extinguisher agent, should be used for an electric fire.

A.dry chemical or foam

B.foam or soda acid

C.carbon dioxide or foam

D.carbon dioxide or dry chemical


正确答案：D
二氧化碳或干粉灭火器作为化学灭火器，用于扑灭电器火灾。

第2题：

As an extinguishing agent, foam ______.

A.conducts electricity

B.should be directed at the base of the fire

C.is most efffective on buring gases which are flowing

D.extinguishes by cooling oil fires below ignition temperature


正确答案：A
对于灭火剂，泡沫灭火剂导电。

第3题：

One of the limitations of foam as an extinguishing agent is that foam ______.

A.cannot be made with salt water

B.is heavier than oil and sinks below its surface

C.is corrosive and a hazard to fire fighters

D.conducts electricity


正确答案：D
泡沫灭火剂的一个局限性是泡沫导电。

第4题：

单选题
On a bulk chemical carrier，water should NOT be used as an extinguishing agent to fight a fire if the water may come into contact with the chemical called（）.
A

acrylic acid

B

benzene

C

oleum

D

vinyl toluene


正确答案： C
解析： 暂无解析

第5题：

单选题
Production of mechanical foam by a portable in-line foam proportioner（）.
A

increases the size of foam bubbles formed

B

increases the rate of foam production

C

improves the extinguishing properties of foam

D

gives the nozzleman more freedom of movement，since it can be placed anywhere in the hose line


正确答案： A
解析： 暂无解析

第6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


正确答案：D
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7题：

Generally, the first action in extinguishing an LFG fire caused by escaping gas is to ______.

A.sweep flames away with water spray

B.shut off the leak

C.use a chemical foam fire extinguisher

D.call the local fire department


正确答案：B
一般来说，在灭因气体泄漏而引起的火灾中，首先要关闭泄漏处。

第8题：

The Admiralty Notices to Mariners can be obtained ______ by Masters of vessels from any Admiralty Chart Agent．

A.free of charge

B.with no responsibility

C.without limitations of distribution

D.with little charges


正确答案：A

第9题：

单选题
Which extinguishing agent is recommended in the Chemical Data Guide for use on a carbon disulfide fire?（）
A

Alcohol foam

B

Dry chemical

C

Chemical foam

D

Water fog


正确答案： C
解析： 暂无解析

第10题：

单选题
A class B fire is most successfully fought by（）.
A

preventing oxygen from reaching the burning material

B

cooling the burning material below its ignition temperature

C

using the extinguishing agent to make the burning material fire-resistant

D

using the extinguishing agent to absorb the heat


正确答案： C
解析： 暂无解析

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