单项选择题
Which arrangement of shell plating is used most in modern shipbuilding（）.
A.Clinker B.Flush C.In-and-Out D.Joggled
单项选择题 When using the term limber system one is referring to a（）.
单项选择题 When lowering manropes alongside a stage rigged over the side of a vessel，they should be allowed to trail in the water（）.
单项选择题 What type of stern tube bearing has the least friction（）.
