In the case of the leading marks，the master may（）to show these in the bill of lading if the goods or their containers are not clearly marked in such a manner as should ordinarily remain legible until the end of the voyage.

单项选择题The development of the container system（）.

A.makes a cargo reach the farthest destination
B.makes the ship go as far as she can
C.is the most significant change in shipping industry
D.is the most economical change in shipping industry

单项选择题The use of containers will make the cargo-handling safer if（）that the man-hours of exposure to risk will decrease.

A.for the other reason
B.for the other reason than
C.not for the reason
D.only for the reason

单项选择题When arranging cargo for（）in the holds，we should give first consideration to ship’s seaworthiness and her being in a good sea-going trim after loading.

A.dunnage
B.separation
C.stowage
D.operation

单项选择题The weight of the container and its contents is supported on deck by what part(s)?（）.

A.Four lower corner castings
B.Bottom，side，and end rails
C.Bottom flooring，side，and end rails
D.Bottom flooring only

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