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?（）.

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

单项选择题A half-height container is used（）.

A.to carry cargoes of low density
B.when stowage space is limited
C.to carry cargoes such as steel products or drums
D.to double the stowage capacity of the vessel

单项选择题A high cube container is designed specifically to（）.

A.carry low density cargoes
B.protect fragile cargoes
C.stow cargoes with concentrated weights such as machinery
D.carry cargoes of very low stowage factors