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单选题
Controls for a fixed carbon dioxide system shall be mounted（）.
A
directly outside the space protected by the system
B
as near the gas cylinders as possible
C
in the pilothouse
D
on the main deck near the bow
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单选题The danger associated with using carbon dioxide in an enclosed space is（）.A
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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
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单选题Every lifeboat which is fitted with a fixed two-way（）radiotelephone apparatus with an antenna which is separately mounted shall be provided with arrangements for sitting and securing the antenna effectively in its operating position.A
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单选题A fixed carbon dioxide extinguishing system for a machinery space，designed WITHOUT a stop valve in the line leading to the protected space，is actuated by（）.A
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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
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单选题Theoretical perfect combustion in a diesel engine yields by-products of （）.A
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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
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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
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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
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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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单选题On a ship，a fixed carbon dioxide or other approved system must be installed（）.A
where oil or chemical drums are storedB
in all battery storage locationsC
in paint lockersD
in all of the above locations
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