海船船员考试

单选题Besides heat, fuel, and oxygen, which of the following is necessary for a fire to exist?（）A Chain reactionB Thermal actionC Chemical occlusionD Pyrotechnical reaction

题目
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

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相似问题和答案

第1题：

Using an inert gas system on a tanker has which advantage（s）________．

A.Provides for faster loading

B.Lowers oxygen content in the tank

C.Provides better fuel economy

D.All of the above


正确答案：B

第2题：

Which of the following assists with airflow in a server？（）

  • A、 Riser cards
  • B、 Water cooling
  • C、 Shroud
  • D、 Baffle
  • E、 Heat sinks

正确答案:C,D

第3题：

Which of the following problems is the main source of fuel pump and injection system malfunctions?

A.Improper lubrication

B.Air in the fuel system

C.Coated fuel lines

D.Excessive vibration


正确答案：B

第4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5题：

Which of the following components channels air flow through a server chassis？（）

  • A、 Fan
  • B、 Heat sink
  • C、 Shroud
  • D、 Radiator

正确答案:C

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：

Which of the following is the MOST critical component related to removing heat from the CPU?（）

  • A、Vented case
  • B、Number of fans
  • C、Thermal paste
  • D、Liquid cooling

正确答案:C

第8题：

According to the passage, which of the following statement is not true?

A.the heat exchanging surfaces should be kept substantially clean

B.the heat exchanger flow passages should be clear of obstruction

C.seals for the plate heat exchanger needs to be renewed often

D.the cleaning process of the plate heat exchanger should be done following our experiences only


正确答案：D

第9题：

单选题
Using an inert gas system on a tanker has which advantage(s)? （）
A

Provides for faster loading

B

Lowers oxygen content in the tank

C

Provides better fuel economy

D

All of the above


正确答案： B
解析： 暂无解析

第10题：

单选题
Which of the following terms represents the form of heat removed from the refrigerant in the condenser of a refrigeration system?（）
A

Latent heat of vaporization

B

Heat of compression

C

Superheat

D

All of the above


正确答案： B
解析： 暂无解析

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