单项选择题
A.trim by the stern B.trim by the head C.be on an even keel D.be tender
What provides the majority of strength to an aluminum-s...
单项选择题What provides the majority of strength to an aluminum-sided container?（）.
A.Corner fittings B.Framework，primarily the corner posts C.Framework and siding acting as a girder D.Aluminum side and end panels
