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.

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

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?（）.