网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
C02 extinguishes a fire by（）.
A
cooling
B
smothering
C
chemical action
D
All of the above
参考答案
参考解析
解析：
暂无解析
更多 “单选题C02 extinguishes a fire by（）.A coolingB smotheringC chemical actionD All of the above” 相关考题
考题
CO2 extinguishes a fire byA.a blanket of bubbles formed on theB.smotheringC.coolingD.isolating the heat from the fuel
考题
CO2 extinguishes a fire by __________.A.a blanket of bubbles formed on the surface of the fireB.smotheringC.isolating the heat from the fuelD.cooling
考题
Foam extinguishes a fire by ______.A.shutting off the air supplyB.cooling the fuel to below ignition temperatureC.dispersing the fuelD.removing the source of ignition
考题
Where do you post your （）(火势控制图)?A、fire control planB、fire controlC、fire planD、fire-fighting plan
考题
单选题One of the disadvantages of using carbon dioxide to extinguish a fire in an enclosed space is （）.A
the snow which is sometimes discharged along with the gas is toxicB
prolonged exposure to high concentrations of C02 gas causes suffocationC
rapid dissipation of theC02 vaporD
the C02 gas is lighter than air and a large amount is required to extinguisha fire near the deck
考题
单选题When two fire hose teams are attacking a fire they should（）.A
use different fire hose pressuresB
use fire hoses of different sizesC
not attack the fire from opposite sidesD
not wear protective clothing
考题
单选题Which of the following statements represents the correct action to take when three crew members discover a fire?（）A
One man report the fire, and the other two men fight the fireB
One man report the fire, one man fight the fire, and one man evacuate and secure the areaC
One man report the fire, one man fight the fire, and one man act as a safety observerD
All three men fight the fire and report it immediately after it is extinguished
考题
单选题An example of class "A" fire is a/an （）.A
electrical fire in the engine roomB
oil fire in the engine room bilgesC
oil fire involving a grade A petroleum productD
mattress fire in a stateroom
考题
单选题Your vessel is equipped with a fixed C02 system and a fire main system. In the event of an electrical fire in the engine room what is the correct procedure for fighting the fire?（）.A
Use the C02 system and evacuate the engine roomB
Use the fire main system and evacuate the engine roomC
Evacuate the engine room and use the C02 systemD
Evacuate the engine room and use the fire main system
考题
单选题A fire is considered "under control" when （）.A
all hands are at their fire stationsB
all fire-fighting equipment is at the sceneC
the fixed systems are activatedD
the fire is contained and no longer spreading
考题
单选题To determine if a C02 fire extinguisher is fully charged, you would（）.A
operate the trigger valveB
weigh the extinguisherC
test with a pressure gaugeD
read the date of last test
考题
单选题Halon extinguishes a fire by（）.A
breaking the chain reactionB
smothering the fireC
cooling the fireD
coating the fuel with a nonflammable surface
考题
单选题During a fire drill on a vessel,what action is required?（）.A
Start each fire pumpB
Launch aand run a lifeboatC
Inventory rescue and fire equipmentD
Inspect fire hoses
考题
单选题During a fire drill on a ship，what action is required?（）A
Start each fire pumpB
Launch and run a lifeboatC
Inventory rescue and fire equipmentD
Inspect fire hoses
考题
单选题Foam extinguishes a fire by（）.A
shutting off the air supplyB
cooling the fuel to below ignition temperatureC
dispersing the fuelD
removing the source of ignition
考题
单选题Which of the following statements is true concerning Halon 1301 fire extinguishing equipment?（）A
The agent is considered nontoxic at room temperature in low concentrationsB
The agent is less effective than carbon dioxideC
Halon primarily extinguishes the fire by coolingD
The agent cannot be used on electrical fires because it leaves a residue
考题
单选题Foam extinguishes a fire mainly by（）.A
coolingB
chemical actionC
smotheringD
inerting the air
考题
单选题Halon extinguishes fire primarily by（）.A
coolingB
smotheringC
shielding of radiant heatD
breaking the chain reaction
考题
单选题How do you operate a portable C02 fire extinguisher?（）.A
Point the horn downB
Turn cylinder upside-downC
Break the rupture discD
Pull pin, squeeze grip
考题
单选题You can determine that a C02 fire extinguisher is fully charged by（）.A
looking at the gageB
checking the nameplate dataC
weighing by handD
weighing on a properly calibrated scale
考题
单选题After extinguishing a fire with C02,it is availabe to（）.A
use all CO2 available to cool the surronding areaB
stand by with water or other agentsC
thoroughly ventilate the space of CO2D
jettison all buring materials
考题
单选题Before using a fixed C02 system to fight an engine room fire,you must（）.A
secure the engine room ventilationB
secure the machinery in the engine roomC
evacuate all engine room personnelD
ALL of the above
热门标签
最新试卷