单项选择题
A.hogging stresses B.sagging stresses C.racking stresses D.shearing stresses
The central longitudinal structural hull strength membe...
单项选择题The central longitudinal structural hull strength member of the lower hulls of semisubmersible ship’s is called the（）.
A.stress plate B.keel C.rider plate D.main beam
Support of ship side plating is provided primarily by t...
单项选择题Support of ship side plating is provided primarily by transverse（）.
A.beams B.girders C.frames D.bulkheads
Structural stress on a ship can be reduced by（）.A.lesse...
单项选择题Structural stress on a ship can be reduced by（）.
A.lessening the effect of environmental forces B.even and symmetrical variable loading C.local concentration of heavy consumables D.increasing the metacentric height
