单项选择题
The use of liners in riveted construction is eliminated by using（）.
A.lapped construction B.strapped construction C.joggled construction D.belted construction
单项选择题 The upward slope of a vessels bottom from the keel to the bilge is called（）.
单项选择题 The upward slope of a ships bottom from the keel to the bilge is known as（）.
单项选择题 The Tonnage Certificate gives（）of a vessel which is classified into gross tonnage and net tonnage.
