更多"How do you operate a portable CO2 f"的相关试题:
[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]How do you operate a portable C02 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]How do you do?（）
A. Fine, thank you.
B. How do you do?
C. Not too bad.
D. Very well.
[单项选择]How do you do? Glad to meet you.（）
A. Fine. How are you?
B. How do you do? Glad to meet you, too.
C. How are you? Thank you!
D. Nice. How are you?
[单项选择]The fire extinguishing action of CO2 comes mostly from （）.
A. breaking the fire chemical chain reaction
B. smothering
C. cooling
D. isolating the heat from the fuel
[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]You will extinguish a fire when you remove（）.
A. nitrogen
B. oxygen
C. sodium
D. carbon dioxide
[单项选择]How do you read ? I read you（）.
A. excellent
B. very fine
C. perfect
D. very clear
[单项选择]How do you treat someone suffering from electrical shock after you secure the source?（）
A. check for respiration
B. check for pulse
C. treat for shock
D. All of the above
[单项选择]When fighting an electrical fire, you should first （）.
A. stop ventilation to the area
B. stop the vessel
C. secure electricity to the circuit
D. apply CO2 to the fire
[单项选择]How many students do you teach?（）
A. Quite a bit.
B. More boys than girls.
C. About .
D. Three mornings.
[单项选择]How do you read? I read you four.（）.
A. excellent
B. bad
C. fair
D. good
[单项选择]To extinguish an electrical fire, you should use （）.
A. mechanical foam
B. chemical foam
C. carbon dioxide
D. soda acid
[单项选择]CO2 extinguishes a fire by（）.
A. cooling
B. smothering
C. chemical action
D. All of the above
[单项选择]How often do you go dancing?（）
A. I will go dancing tomorrow.
B. Yesterday.
C. Every other day.
D. I've been dancing for a year.
[单项选择]How do you determine the weight of the vessel that is supported by the ground when a vessel has run aground?（）.
A. This requires extensive calculation and is usually performed only by a naval architect not by a ship's officer
B. Determine the point where aground and the draft at that point，then calculate it using the grounding formula
C. Use the hydrostatic tables and enter with the mean draft before grounding and the mean draft after grounding
D. Use the inclining experiment formula and substitute the change of trim for the angle of list
[单项选择]“How do you read?” “I read you with signal strength one”（）.
A. poor
B. bad
C. fair
D. good
[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
