One of the principal dangers inherent ...

单项选择题X 纠错

One of the principal dangers inherent in liquefied petroleum gas is（）.

A.as it warms up it becomes heavier than air
B.the way it reacts with sea water
C.the strong odor it produces
D.its low temperature causes frostbite or freezing

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Inerting means（）.

A.the introduction of inert gas into a tank with the object of reducing the oxygen content to below 8% by volume
B.the introduction of inert gas into a gas free tank for the purpose of reducing the oxygen content to below 8% by volume
C.the introduction of inert gas into a cargo tank during cargo discharge to replace the volume of discharged cargo
D.All of the above

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In setting the valves on a steam-smothering system on a tank vessel，the master control valve to cargo tanks should be（）.

A.open and individual tank valves open
B.open and the individual tank valves closed
C.closed and the individual tank valves closed
D.closed and the individual tank valves open

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If you are fighting a fire below the main deck of your vessel，which action is most importantconcerning the stability of the vessel? （）

A.Shutting off electricity to damaged cables
B.Pumping fire-fighting water overboard
C.Maneuvering the vessel so the fire is on the lee side
D.Removing burned debris from the cargo hold

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If a leak occurred while loading diethylenetriamine，the chemical data guide indicates you would smell an odor similar to（）.

A.ammonia
B.rotten eggs
C.gasoline
D.None of the above

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单项选择题

Hoses used for cargo transfer operations must be tested and inspected at specified intervals by（）.

A.a representative of the Captain of the Port
B.the operator of the vessel or facility
C.a representative of the National Cargo Bureau
D.low inert gas temperature

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Each inert gas system gas main must have an automatic shut down valve at the outlet of the gas production plant. This valve must close automatically upon（）.

A.cargo pump failure
B.blower failure
C.deck seal low water level
D.low inert gas temperature

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单项选择题

During loading and discharging operations，in addition to when the cargo tanks have been properly filled，each inert gas system must be capable of maintaining a minimum gas pressure of（）.

A.150 millimeters of water pressure
B.125 millimeters of water pressure
C.100 millimeters of water pressure
D.75 millimeters of water pressure

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After making the required notification that a large oil spill into the water has occurred，the FIRST action should be to（）.

A.apply straw or sawdust on the oil
B.contain the spread of the oil
C.throw grains of sand into the oil
D.have the vessel move out of the spill area