单项选择题
A.in B.on C.with D.for
In any case the draught of the vessel at the（）shall not...
单项选择题In any case the draught of the vessel at the（）shall not be less than that which is necessary to obtain full immersion of the propeller.
A.forward perpendicular B.amidships C.longitudinal center of floatation D.after perpendicular
In a transversely framed ship，the transverse frames are...
单项选择题In a transversely framed ship，the transverse frames are supported by all of the following EXCEPT（）.
A.girders B.longitudinals C.side stringers D.web plates
In a longitudinally-framed ship，the longitudinal frames...
单项选择题In a longitudinally-framed ship，the longitudinal frames are held in place and supported by athwartship members called（）.
A.floors B.margin plates C.stringers D.web frames
