单项选择题
A.camel B.dolphin C.rat guard D.wedge
A term applied to the bottom shell plating in a double-...
单项选择题A term applied to the bottom shell plating in a double-bottom ship is（）.
A.bottom floor B.outer bottom C.shear plating D.tank top
A strong back refers to a（）.A.bar securing a cargo port...
单项选择题A strong back refers to a（）.
A.bar securing a cargo port B.centerline vertical bulkhead C.deep beam D.spanner stay
A spreader bar is used to（）.A.increase the lifting capa...
单项选择题A spreader bar is used to（）.
A.increase the lifting capacity B.increase the lifting radius C.protect the slings D.protect the upper part of a load
