更多"The fire extinguishing action of CO"的相关试题:
[单项选择]After extinguishing a fire with CO2，it is advisable to（）.
A. use all CO2 available to cool the surrounding area
B. stand by with water or other agents
C. thoroughly ventilate the space of CO2
D. jettison all burning materials
[单项选择]Portable CO2 fire extinguishers should NOT be used to inert a space containing flammable liquids due to the danger of（）.
A. the CO2 being inhaled by personnel
B. reflash of burning liquids
C. vapor condensation on the extinguisher
D. the discharge causing a static spark
[单项选择]CO2 extinguishes a fire by （）.
A. a blanket of bubbles formed on the surface of the fire
B. smothering
C. cooling
D. isolating the heat from the fuel
[单项选择]How do you operate a portable CO2 fire extinguisher?（）.
A. Point the horn down
B. Turn cylinder upside-down
C. Break the rupture disc
D. Pull pin，squeeze grip
[单项选择]If a CO2 fire extinguisher is not readily available, which of the listed fire extinguishers would be best suited to combat a small electrical fire in a switchboard?（）
A. Dry chemical
B. Halon
C. Low velocity fog
D. Steam
[单项选择]To determine if a CO2 fire extinguisher is fully charged，you would（）.
A. Operate the trigger valve
B. Weigh the extinguisher
C. Test with a pressure gauge
D. Read the date of last test
[单项选择]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
[单项选择]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 t e local fire department
[填空题]CO2气体保护焊分为（）CO2气体保护焊和（）CO2气体保护焊两种。
[单项选择]光合作用吸收CO2与呼吸及光呼吸作用释放的CO2达到动态平衡时，外界的CO2浓度称为（）。
A. CO2饱和点
B. O2饱和点
C. CO2补偿点
[单项选择]海洋CO2储库比大气CO2储库（），海洋碳储库的各种微小变化可能对大气CO2产生（）的影响。
A. 小得多，很小
B. 小得多，很大
C. 大得多，很小
D. 大得多，很大
[单项选择]仅从CO2汽提的角度考虑，CO2汽提法尿素合成塔出液组成点应落在NH3-CO2-Ur.H2O似三元平衡相图中的（）。
A. 液体顶脊线以上区域
B. 液体顶脊线以下区域
C. 液体顶脊线上
[判断题]CO2焊用的CO2气体纯度不应小于95%。
