What is required in addition to the heat,fuel,and oxygen of

题目
单选题
What is required in addition to the heat,fuel,and oxygen of the fire triangle to have a fire?()
A

Electricity

B

Chain reaction

C

Pressure

D

Smoke

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相似问题和答案

第1题:

What is NOT required to be contained in the oil transfer procedures ________.

A.A line diagram of the vessel's oil transfer piping

B.The number of persons on duty during oil transfer operations

C.Any special procedures for topping off tanks

D.The location and capacity of all fuel and cargo tanks on the vessel


正确答案:D

第2题:

What statement is true of how a customer acquires Intrusion Prevention and Content Security services in a  Cisco security solution?()

  • A、 The Cisco security portfolio includes a third-party IPS.
  • B、 A hardware module addition is required on the ISR platforms.
  • C、 They are bundled on the ASA 5505.
  • D、 A hardware module addition is required on the ASA 5510/5520.

正确答案:C

第3题:

Indirect cooling of fuel injector nozzle holders for diesel engines is accomplished primarily by

A.heat conduction into the injected fuel oil

B.heat conduction into the water jacket wall

C.water circulation through passages in the holder

D.fuel oil circulation through passages m the holder


正确答案:B

第4题:

单选题
The three basic elements necessary for any fire are ().
A

heat, gas, and flames

B

fuel, heat, and oxygen

C

heat, nitrogen, and fuel

D

fuel oil, nitrogen, and oxygen


正确答案: D
解析: 暂无解析

第5题:

单选题
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


正确答案: C
解析: 暂无解析

第6题:

What quality of a diesel fuel is most significant for efficient combustion ________.

A.Volatility

B.Viscosity

C.Flash point

D.Specific heat


正确答案:A

第7题:

单选题
In a diesel engine, offers the heat energy directly(); works as working medium and changes the heat energy to mechanical energy()
A

the burning of the fuel; medium shaft

B

fuel spray; fresh air

C

fuel; fuel spray

D

the burning of the fuel; the burned gas mixture


正确答案: C
解析: 暂无解析

第8题:

CO2 extinguishes a fire by

A.a blanket of bubbles formed on the

B.smothering

C.cooling

D.isolating the heat from the fuel


正确答案:B

第9题:

单选题
The (auto)ignition temperature is that temperature atwhich().
A

no spark or flame is required to ignite gas or vapor

B

a fuel begins to give off explosive vapors

C

a fuel if ignited will continue to burn

D

a 1% mixture of the fuel with air will explode


正确答案: B
解析: 暂无解析

第10题:

单选题
However fast or slow the combustion rate, it is still a () between carbon, hydrogen, sulphur and oxygen that releases heat.
A

physical deformation

B

state exchange

C

chemical reaction

D

coalescence


正确答案: D
解析: 暂无解析

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