the height of the sills of access openings in bulkheads at ends of enclosed superstructures shall be at least( )above the deck_ _ _ _
A.760mm B.600mm C.230mm D.380mm正确答案D
the height of the sills of access openings in bulkheads at ends of enclosed superstructures shall be at least( )above the deck_ _ _ _
A.760mm B.600mm C.230mm D.380mm正确答案D