Under the specified test conditions, the minimum temperature of flashing ignition of under the action of the test flame is called (B).
A self-ignition point
B flash point
C self-ignition
D ignition point
(C) is an important parameter for evaluating the fire hazard of combustible liquids.
A ignition point
B self-ignition point
C flash point
D explosion limit
0 The fire hazard of flammable liquid is classified according to the liquid (C).
A ignition point
B self-ignition point
C flash point
D freezing point
D freezing point
0 Production and storage liquids with a fire hazard of Class A, and their flash point (B).
A>28℃
B＜28℃
C≥28℃
D≤60℃
0 Wood combustion belongs to (B).
A Evaporation combustion
B Decomposition combustion
C Surface combustion
D Boiling overflow combustion
Milling burn
Milling burn
Boiling and overflow combustion
C Candle combustion belongs to (A).
A Evaporation combustion
B Decomposition combustion
C Surface combustion
D Boiling overflow combustion
Flash burning is often a precursor to the occurrence of combustible liquids (A).
A ignites
B splatters
C smolds
D boils over
combustible solids with complex molecular structure. The flame-burning phenomenon that occurs after the combustible gas is produced due to heat decomposition, is called (B).
A Evaporation combustion
B Decomposition combustion
C Complete combustion
D Premix combustion
2
Premix combustion
0 Wood, paper, cotton, linen, wool, silk, synthetic polymer thermosetting plastics, synthetic rubber and other substances belong to (C).
A Evaporation combustion
B Premix combustion
C Decomposition combustion
D Homogeneous combustion
D Combustible solid combustion reaction is a combustion that directly adsorbs oxygen on its surface, and is called (D).
A Smoldering
B Decomposition combustion
C Evaporation combustion
D Surface combustion
C Charcoal, coke, iron, copper and other substances are all (A).
A Surface combustion
B Evaporation combustion
C Decomposition combustion
D Smoldering
smoldering
smoldering
smoldering
smoldering
smoldering may occur (B).
A plastic
B coal
C rubber
D candle
D candle
flammable solids are sublimated after being heated or melted and evaporated. The subsequent flame combustion phenomenon of steam and oxygen is called (D).
A decomposition combustion
B surface combustion
C diffusion combustion
D evaporation combustion
(A) refers to the minimum ignition energy of each explosive mixture under certain conditions.
A minimum detonation energy
B maximum ignition energy
C explosion ignition source
D explosion limit
Solid substance combustion. According to the combustion characteristics of solid substances, it mainly includes four types: evaporation combustion, decomposition combustion, surface combustion and (D).
A Power combustion
B Diffusion combustion
C Fire
D Smoldering
Much substances have no visible light and are usually produced and have a temperature increase is called (C).
A flash burning
B self-ignition
C smoldering
D bomb burning
C certain solid combustible materials will occur when the air is not circulating, the heating temperature is low or the moisture content is high (B).
A flash burning
B smolding
C self-ignition
D flammable
combustible vapor, gas or mixture of dust and air, the lowest concentration that can explode when exposed to a fire source is called (C).
A Explosion limit
B Explosion upper limit
C Explosion lower limit
D Self-ignition concentration
D According to fire hazard classification, the following belongs to Class A flammable liquids (A).
A ethanol
B butanthylene
C kerosene
D diesel
D
C according to the fire hazard of the stored items. Among the following liquids (D) belong to Class A dangerous goods.
A kerosene
B diesel
C vegetable oil
D ethylene
2
Boiler is the key to preventing (A) from furnace explosion.
A: The accumulation of fuel and combustion air
B: The fuel and air mixture reaches the concentration of detonation
C: There is sufficient ignition energy
D: There is sufficient detonation energy
detonation has great destructive power. Once the conditions are met, detonation will occur suddenly, and a high-speed, high-temperature, high-pressure, high-energy, and high-impact shock wave is generated at the same time. The shock wave can exist independently away from the detonation source, and can cause the explosion of other explosive gas mixtures or explosives located at a certain distance and have no connection with it, thus producing a "(A)" phenomenon.
A Explosion
B Explosion
C Explosion
D Explosion
D Explosion
combustible vapor, gas or mixture of dust and air. The highest or lowest concentration that can explode when it encounters a fire source is called (A).
A Explosion limit
B Explosion
C Explosion temperature limit
D Spontaneous combustion
Regarding the explosion limit, the following statement is correct (A). The lower the explosion limit, the wider the explosion limit range, the greater the danger of explosion
B the lower the explosion limit, the wider the explosion limit range, the greater the danger of explosion
C the lower the explosion limit, the narrower the explosion limit range, the greater the danger of explosion
D the lower the explosion limit, the narrower the explosion limit range, the greater the danger of explosion
D the lower the explosion limit, the narrower the explosion limit range, the greater the danger of explosion
0 The room content equipment that cannot be leaked to the outdoors through the pressure relief catheter should be installed (A).
A flame-free explosion-release device
B flame-release device
C explosion-resistance device
D anti-explosion device
D process equipment that has the danger of dust explosion should be protected by (B).
A explosion relief device
B explosion suppression device
C explosion-proof device
D explosion-proof device
D explosion-proof device
0 Equipment and facilities that are connected to each other through pipelines that are in danger of dust explosion should be installed on the pipeline (C).
A explosion relief device
B explosion suppression device
C explosion-proof device
D explosion-proof device
D explosion-proof device
0 Due to the fission of atomic nucleus or fusion reaction , the explosion formed by nuclear energy is released, which is called (C).
A chemical explosion
B physical explosion
C nuclear explosion
D explosive explosion
D explosive explosion
0 The following is not a combustible dust (D).
A starch
B sulfur powder
C sawdust
D quartz dust
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A gas explosion
B dust explosion
C solid explosion
D physical explosion
