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
Which extinguishing agent is most effective on a mattress fire?（）
A
CO2
B
Foam
C
Dry Chemical
D
Water
参考答案
参考解析
解析：
暂无解析
更多 “单选题Which extinguishing agent is most effective on a mattress fire?（）A CO2B FoamC Dry ChemicalD Water” 相关考题
考题
Which of the following security mitigation techniques is the MOST effective against zero－day attacks?()
A.Update antivirus definitionsB.MAC filteringC.Effective security policiesD.User awareness training
考题
Which statement about tunnel bow thrusters fitted to large vessels is TRUE ________．A.They are effective on most vessels at speeds up to 10 knotsB.Because of their location，most modern installations have as much power as a tugC.They are fully effective at all draftsD.When going astern at slow speed，they provide effective steering control
考题
An extinguishing agent which effectively cools, dilutes combustible vapors, removes oxygen, and provides a heat and smoke screen is ______.A.carbon dioxideB.Halon 1301C.dry chemicalD.water fog
考题
As an extinguishing agent, foam ______.A.conducts electricityB.should be directed at the base of the fireC.is most efffective on buring gases which are flowingD.extinguishes by cooling oil fires below ignition temperature
考题
Foam is a very effective smothering agent and ______.A.it provides cooling as a secondary effectB.works well on extinguishing electrical firesC.can be used to combat combustible metal firesD.All of the above
考题
Which of the following security mitigation techniques is the MOST effective against zero-day attacks?（）A、Update antivirus definitionsB、MAC filteringC、Effective security policiesD、User awareness training
考题
Which of the following is MOST likely the reason a technician would implement software RAID for a SOHO environment？（）A、CPU efficiencyB、High availabilityC、High redundancyD、Cost effective
考题
Which of the following wireless security techniques is the MOST secure?（）A、Enable Wired Equivalent PrivacyB、Disable SSID broadcastC、Enable Wi-Fi Protected AccessD、Enable MAC filtering
考题
单选题Which extinguishing agent is recommended in the Chemical Data Guide for use on a carbon disulfide fire?（）A
Alcohol foamB
Dry chemicalC
Chemical foamD
Water fog
考题
单选题Which extinguishing agent is effective in combating an isoprene fire?（）A
Dry chemicalsB
CO2C
FoamD
All the above
考题
单选题A class B fire is most successfully fought by（）.A
preventing oxygen from reaching the burning materialB
cooling the burning material below its ignition temperatureC
using the extinguishing agent to make the burning material fire-resistantD
using the extinguishing agent to absorb the heat
考题
单选题Which of the following security mitigation techniques is the MOST effective against zero-day attacks?（）A
Update antivirus definitionsB
MAC filteringC
Effective security policiesD
User awareness training
考题
单选题For which of the listed classes of fire combinations would carbon dioxide be most suitable as the extinguishing agent （）.A
Class A and class BB
Class B and class CC
Class A and class CD
Class C, class D, and class E
考题
单选题Which statement about firefighting foam is TRUE?（）A
Foam conducts electricityB
To be most effective，foam should be directed at the base of the fireC
Foam is most effective on burning liquids which are flowingD
Foam can ONLY be used to extinguish class A fires
考题
单选题Water is a very effective fire extinguishing agent because it（）A
will remove all the toxic fumes from the airB
has the greatest cooling abilityC
will leave no harmful residueD
completely removes combustible vapors from the air
考题
单选题Which extinguishing agent is best for use on a magnesium fire?（）A
WaterB
SandC
CO2D
Dry chemical
考题
单选题Which extinguishing agent is the best for use on electrical fires?（）A
FoamB
CO2C
Dry chemicalD
Water fog
考题
单选题As an extinguishing agent，foam（）.A
conducts electricityB
should be directed at the base of the fireC
is most effective on burning gases which are flowingD
extinguishes by cooling oil fires below ignition temperature
考题
单选题Which extinguishing agent will cool down a heated bulkhead in the least amount of time?（）A
Water streamB
Water fog or aprayC
SteamD
Dry chemical
考题
单选题Which extinguishing agent is NOT recommended in the Chemical Data Guide for use on a cyclohexane fire?（）A
FoamB
Carbon dioxideC
Dry chemicalD
Water fog
考题
单选题Carbon dioxide as a fire fighting agent has which advantage over other agents?（）.A
It causes minimal damageB
It is safe for personnelC
It is cheaperD
It is most effective on a per unit basis
考题
单选题What is the most important characteristic of the extinguishing agent in fighting a class C fire?（）A
WeightB
TemperatureC
Electrical nonconductivityD
Cost
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Which of the following statements is true concerning carbon dioxide when used as a fire extinguishing agent?（）A
Carbon dioxide is corrosive when exposed to fireB
Carbon dioxide should be applied slowly to a large engine room fireC
Its total cooling effect is far greater than waterD
Its smothering effect is excellent for class B fires
考题
单选题An extinguishing agent which effectively cools，dilutes combustible vapors，removes oxygen，and provides a heat and smoke screen is（）.A
carbon dioxideB
Halon 1301C
dry chemicalD
water fog
考题
单选题A branch line valve of a fire extinguishing system on a ship must be marked with the（）.A
maximum pressure allowed at that branchB
name of the space or spaces which it servesC
date of the last maintenance inspectionD
pressure needed to maintain an effective stream at that point
考题
单选题Foam is a very effective smothering agent and（）.A
it provides cooling as a secondary effectB
works well on extinguishing electrical firesC
can be used to combat combustible metal firesD
All of the above
热门标签
最新试卷