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单选题
On a ship，a fixed carbon dioxide or other approved system must be installed（）.
A
where oil or chemical drums are stored
B
in all battery storage locations
C
in paint lockers
D
in all of the above locations
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What could result in an incorrect oxygen concentration reading on the oxygen indicator ________．A.Exposure to carbon dioxide for no more than 1 minuteB.Exposure to carbon dioxide for more than 10 minutesC.Exposure to a very low concentration of sulfur dioxide for no more than 2 minutesD.None of the above
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Large volumes of carbon dioxide are safe and effective for fighting fires in enclosed spaces, such as in a pumproom, provided that the ______.A.persons in the space wear gas masksB.persons in the space wear damp cloths over their mouths and nostrilsC.ventilation system is secured and all persons leave the spaceD.ventilation system is kept operating
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单选题A fixed CO2 system on a ship with a capacity of over 300 lbs (136 kilograms) CO2 which protects spaces other than tanks must have（）.A
two or more releasing stationsB
automatic release in event of a fireC
an audible alarm and time delayD
an audible and visible alarm
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单选题Before operating a non-oceangoing ship greater than 100 gross tons it must have a fixed piping system to discharge oily mixtures ashore. This system must include（）.A
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at least one outlet accessible from the weather deck
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单选题The danger associated with using carbon dioxide in an enclosed space is（）.A
frostbiteB
skin burnsC
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an explosive reaction
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单选题Carbon dioxide flooding system is used for extinguishing fires because it reduces the concentration of oxygen in the air to（）.A
flashing pointB
combustion pointC
auto-ignition pointD
lower explosive limit
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单选题As compared to carbon dioxide,dry chemical has which advantage?（）.A
CleanerB
EffectiveC
Greater rangeD
More cooling effect
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单选题A vessel in ocean service that does not have an approved means of processing oily bilge slops or oily ballast must have（）.A
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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
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考题
单选题Controls for a fixed carbon dioxide system shall be mounted（）.A
directly outside the space protected by the systemB
as near the gas cylinders as possibleC
in the pilothouseD
on the main deck near the bow
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单选题Large volumes of carbon dioxide are safe and effective for fighting fires in enclosed space, such as in the pumproom, provided that the（）.A
persons in the space wear gas masksB
persons in the space wear damp cloths over their mouths and nostrilsC
ventilation system is secured and all persons leave the spaceD
ventilation system is kept operating
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单选题Theoretical perfect combustion in a diesel engine yields by-products of （）.A
aldehydes and carbon dioxideB
water vapor and carbon monoxideC
nitrogen and carbon monoxideD
water vapor and carbon dioxide
考题
单选题On a ship，a cabinet or space containing the controls or valves for the fixed firefighting system must be（）.A
posted with instructions on the operation of the systemB
ventilated and equipped with explosion-proof switchesC
painted with red and black diagonal stripesD
equipped with a battery powered source of emergency lighting
考题
多选题On what conditions may an exemption certificate，exempting from the requirement to install a fixed fire extinguishing system in a cargo space，be issued？（）AThe ship is constructed and solely intended for carriage of ore， coal， grain， unseasoned timber， non-combustible cargoes or cargoes which according to the Administration constitute a low fire riskBSteel hatch covers and effective means of closing all ventilators and other openings to the cargo space are fittedCA fixed deck foam system is be fitted in lieu of the cargo space extinguishing systemDThe vessel is less than 10 000 gross tonnage
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判断题Natural systems can reduce the amount of carbon dioxide in the atmosphere caused by carbon emissions.A
对B
错
考题
单选题Why should you wear a self-contained breathing apparatus before entering the engine room after the fixed CO2 system has been discharged to combat a major fire?（）A
Because carbon dioxide dilutes the oxygen concentration in the atmosphere and may cause asphyxiationB
Because carbon dioxide breaks down in a fire into carbon monoxide which may cause blood poisoning in the person breathing this gasC
Because carbon dioxide is a colorless and odorless gas that becomes highly toxic in the presence of high temperatures and will quickly incapacitate a person exposed to this gasD
This action is unnecessary as carbon dioxide is not poisonous nor toxic but is a relatively harmless gas
考题
单选题The supply of carbon dioxide used in the fixed extinguishing system aboard a cargo vessel MUST be at least sufficient for（）.A
all the spaces of a vesselB
all cargo spacesC
the engine room and largest cargo spaceD
the space requiring the largest amount
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