23.One function of bulwark is to _______.
A.help keeping the deck dry
B.prevent stress concentrations on the stringer plate
C.protect against twisting forces exerted on the frame of the vessel
D.reinforce the side stringers
正确答案是A
23.One function of bulwark is to _______.
A.help keeping the deck dry
B.prevent stress concentrations on the stringer plate
C.protect against twisting forces exerted on the frame of the vessel
D.reinforce the side stringers
正确答案是A