单项选择题
A record of the types and strengths of steels used on a ship must be included in the（）.
A.general plans B.builder's documentation C.Certificate of Inspection D.construction portfolio
单项选择题 A liner in riveted construction of a vessel is a(n)（）.
单项选择题 A large vessel is equipped with a controllable pitch propeller. Which statement is TRUE?（）.
单项选择题 A heated bulkhead has the effect on a hygroscopic commodity of（）.
