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單項(xiàng)選擇題

Reinforcing frames attached to a bulkhead on a vessel are called（）.

A.side longitudinals
B.intercostals
C.stiffeners
D.brackets

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單項(xiàng)選擇題

Progressive flooding on a ship is controlled by securing watertight boundaries and（）.

A.transferring drill water
B.dumping bulk materials
C.pumping out flooded compartments
D.evacuating the unit

單項(xiàng)選擇題

On a vessel，the keel is the primary strength member of the lower hull form in which direction?（）.

A.transverse
B.diagonal
C.longitudinal
D.vertical

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