单项选择题

A.Discharge a cylinder of nitrogen into the containerB.……

You are in a tropical port. The refrigeration machinery on a container loaded with air-cooled fruit fails. It cannot be repaired for 18 to 24 hours. Which step should you take to reduce the temperature rise and spoilage of the fruit?（）.

A.Discharge a cylinder of nitrogen into the container
B.Shade the container and periodically hose it down
C.Seal any ventilation openings and add dry ice
D.Spread ice over the top layer and in any voids within the container

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单项选择题You are on a container vessel. What concerning the handling and stowage of containerized hazardous materials is TRUE?（）.

A.Open-bed containers may be used to transport hazardous materials if the cargo is properly secured
B.A portable cargo tank of a flammable，cryogenic liquid may not be in transit for a period exceeding its marked rated holding time unless the liquid is inhibited
C.A portable cargo tank containing a cryogenic liquid must be shipped on deck unless forced ventilation is provided to the tween-decks
D.A container loaded with packages of tear gas would display a placard reading Irritant

单项选择题You are on a containership carrying a tank container that had been filled with sodium hydroxide solution. The container is empty but has not been cleaned. Which，if any，placard is required?（）.

A.No placard is required; the tank openings must be sealed
B.Empty placard with corrosive placard
C.Residue label with the UN number
D.Black and white corrosive placard

单项选择题You are on a containership. The cargo includes a container of small arms ammunition，a container of lead-acid storage batteries and bottles of methyl acetylene. Which statement is TRUE?（）.

A.The storage batteries must be stowed on deck away from the ammunition
B.The storage batteries must be at least ten horizontal feet away from the methyl acetylene if in the same space
C.The ammunition must be separated from the methyl acetylene by at least one hold
D.The methyl acetylene may be stowed on deck or under deck with under deck stowage to be used if available

单项选择题You are on a containership. Which statement about the stowage of hazardous materials in containers is TRUE?（）.

A.The containers provide automatic segregation of hazardous materials except for class A explosives
B.All packages within a container must be marked This End Up to indicate the correct stowage
C.A refrigerated container with a fuel tank containing a flammable liquid must be stowed on deck
D.Packages of liquids within a container should be stowed on top of packages of solids to prevent crushing

单项选择题A container with high cube would most likely be used to stow（）.

A.dense bulk cargoes
B.household appliances
C.fragile cargoes
D.heavy industrial machinery