A.Four lower corner castingsB.Bottom，side，and end rails……

单项选择题Under normal weather and sea conditions when securing a stack of containers with non-locking fittings，lashings are required when the tier exceeds what height?（）.

A.Lashings are always required
B.One container
C.Two containers
D.Three containers

单项选择题Under the Carriage of Goods by Sea Act of 1936，a vessel will be liable for damage to cargo when the damage arises out of（）.

A.poor stowage of cargo in a container
B.fire caused by lightning
C.overloading
D.inherent vice

单项选择题What is NOT an advantage of containership operations over conventional break-bulk operations? （）.

A.Flexibility of operation
B.Greater operational safety
C.Lower stevedoring costs
D.Reduction of cargo damage

单项选择题What is the meaning of the term tare weight?（）.

A.Pounds of force necessary to damage a container
B.Total weight of a container and contents
C.Weight of a container
D.Weight of the contents of a container

单项选择题When loading a container vessel，the operation is basically that of vertical loading. The important factors to be considered when loading containers are port of discharge，（）.

A.available dunnage，and chocking
B.crushability，and inherent vice
C.sweat，and weight
D.weight，and refrigeration