单选题A ship must have a self-contained breathing apparatus to be used as protection from gas leaking from a refrigeration unit. To meet this requirement，you may use（）.Aa gas mask certified by the Mine Safety and Health AdministrationBthe same self-contained breathing apparatus required with the fireman's outfitCan oxygen breathing apparatus，provided that the device has been inspected within three yearsDa portable ventilation system that will provide a complete change of air every three minutes
单选题
A ship must have a self-contained breathing apparatus to be used as protection from gas leaking from a refrigeration unit. To meet this requirement，you may use（）.
A
a gas mask certified by the Mine Safety and Health Administration
B
the same self-contained breathing apparatus required with the fireman's outfit
C
an oxygen breathing apparatus，provided that the device has been inspected within three years
D
a portable ventilation system that will provide a complete change of air every three minutes
参考解析
解析：
暂无解析
相关考题：
On a ship, the locker or space containing the self-contained breathing apparatus must _____.A.be located in close proximity to the main control stationB.be equipped with battery powered emergency lightingC.be marked SELF-CONTAINED BREATHING APPARATUSD.All of the above
Self-contained breathing apparatus is used to ______.A.make underwater repairs to bargesB.determine if the air in a tank is safe for menC.enter areas that may contain dangerous fumes or lack oxygenD.resuscitate an unconscious person
What is the minimum period of time that the air supply for a self-contained breathing apparatus is required to last?________.A.10 minutesB.20 minutesC.30 minutesD.90 minutes
According to SOLAS the breathing air apparatus that must be onboard shall have sufficient capacity for how many minutes of operation?____.A.20B.30C.45D.60
You are on a multiple product tanker and carrying methyl acrylate，diethanolamine，and triethylamine. Which statement is TRUE?A.Methyl acrylate may be loaded in a tank adjacent to diethanolamine but not triethylamineB.The heating coils to the cargo tank loaded with methyl acrylate must be blanked offC.Valve components made of aluminum，copper，or zinc may not be in contact with the cargoesD.Each crew member working on deck must have an emergency escape breathing apparatus
Which statement about general average is TRUE ________．A.Damage to a ship must have been incurred while the ship and/or its machinery was being used for its intended purposeB.Property must have been sacrificed or an expenditure of money incurredC.The loss or damage to deck cargo due to heavy weather constitutes general averageD.Of the ship，the freight，and the cargo interests，only one need be involved
When loading containers into the cell guides in the hold of a container ship，which statement is TRUE ________．A.No further securing is usually requiredB.Containers must have vertical lashings if they do not have twist lock securingC.All containers must have vertical and horizontal lashingsD.The container must be locked into the cell guide
The bypass valve on a self-contained breathing device should be opened if ______．A.You are entering a space containing poisonous vaporsB.You are entering a space containing explosive gasesC.The regulator of the breathing apparatus malfunctionsD.The face piece of the breathing device is too tight
The function of the bypass valve on the self-contained breathing apparatus is to ______．A.control the pressure of the oxygen as it enters the bodyB.allow the wearer to manually give himself oxygenC.release excess heat which would otherwise cause the bottle to explodeD.allow exhaled gases to pass outside the bottle
Gas masks ______.A.should be worn while fighting a fireB.can be used in atmospheres deficient in oxygenC.filter contaminants from air that is to be breathedD.may be substituted for a self-contained breathing apparatus
单选题The bypass valve on a self-contained breathing device should be opened if（）.Ayou are entering a space containing poisonous vaporsByou are entering a space containing explosive gasesCthe regulator of the breathing apparatus malfunctionsDthe face piece of the breathing device is too tight
单选题A firemans outfit carried onboard cargo vessels, must have a （）.Acanister-type gas maskBfresh-air breathing apparatusCself-contained breathing apparatusDcombustible gas indicator
单选题Gas masks（）.Ashould be worn while fighting a fireBcan be used in atmospheres deficient in oxygenCfilter contaminants from air that is to be breathedDmay be substituted for a self-contained breathing apparatus
单选题A self-contained breathing apparatus is used to（）.Amake underwater repairs to bargesBdetermine if the air in a tank is safe for menCenter areas that may contain dangerous fumes or lack oxygenDresuscitate an unconscious person
单选题Fire protection regulations for towing vessels require training in all of the following，EXCEPT（）.Aputting on a fireman's outfit，if the vessel is so equippedBdonning a self-contained breathing apparatus，if the vessel is so equippedCactivating the general alarm and reporting inoperative alarm systems and fire-detection systemsDrefilling and servicing all expended fire extinguishing equipment
单选题On all vessels equipped with refrigeration units of over 20 cubic foot capacity, （）.Aa gas mask suitable for protection against each refrigerant used, or a self contained breathing apparatus must be providedBit is the sole responsibility of the chief engineer to ascertain that all members of the engineering department are familiar with the use of gas masks or breathing apparatusCspare charges shall be carried for at least 50% of each size and variety of gas masks and/or self contained breathing apparatusDall of the above
单选题After putting on a self-contained breathing apparatus, you open the air supply and hear a continuous ringing of a bell.What does this mean?（）.AThe unit is working properlyBThe face mask is not sealed properlyCThe air bottle needs to be refilledDThe air supply hose has a leak
单选题Before the oily water is installed on board ships, it must have （）AIOPPBtype approval certificateCcargo ship safety equipment certificateDcargo ship safety certificate
单选题You are on a multiple product tanker and carrying methyl acrylate，diethanolamine，and triethylamine. Which statement is TRUE? （）AMethyl acrylate may be loaded in a tank adjacent to diethanolamine but not triethylamineBThe heating coils to the cargo tank loaded with methyl acrylate must be blanked offCValve components made of aluminum，copper，or zinc may not be in contact with the cargoesDEach crew member working on deck must have an emergency escape breathing apparatus
单选题Which statement about the hospital space on a cargo ship is TRUE（）.AThe hospital may be used for disciplinary confinement if it is not being used for treatmentBThe hospital space must have both a bathtub and showerCA hospital is required on all vessels with a crew of 12 or more if it makes overnight voyagesDIf a ship has a crew of forty-five who do not have their own room，the hospital must have four berths
单选题The function of the bypass valve on the self-contained breathing apparatus is to（）.Acontrol the pressure of the oxygen as it enters the bodyBallow the wearer to manually give himself oxygenCrelease excess heat which would otherwise cause the bottle to explodeDallow exhaled gases to pass outside the bottle
单选题When loading containers into the cell guides in the hold of a container ship，which statement is TRUE?（）.ANo further securing is usually requiredBContainers must have vertical lashings if they do not have twist lock securingCAll containers must have vertical and horizontal lashingsDThe container must be locked into the cell guide
单选题Which emergency equipment should you keep near the towing bitts? （）AA self-contained breathing apparatus (SCBA)BA boat hook and a spanner wrenchCA fire ax and/or cutting torchDA Stokes litter basket
单选题You are about to enter a compartment to investigate a suspected smoldering fireIf youre not wearing a self-contained breathing apparatus, you should test the compartments atmosphere to determine if there is/are （）.Asufficient oxygen to sustain human lifeBan explosive mixture in the compartmentCa toxic atmosphere in the compartmentDAll of the above
单选题For use as protection from gas leaking from a refrigeration unit，each ship must be equipped with a（）.Aportable ventilation systemBflame safety lampCself-contained breathing apparatusDgas mask
单选题A fishing vessel that is required to have a fireman’s outfit，must have all of the following in the outfit except a（）.AflashlightBcombustible gas indicatorCself-contained breathing apparatusDfire axe