單項(xiàng)選擇題

For existing ships，（）is not an improvement to safety.

A.the reinforcement of the aft transverse watertight bulkhead
B.the double bottom structure in way of the foremost cargo hold
C.the introduction of a more rigorous survey regime and greater attention to operating procedures
D.introduction of new and improved designs

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單項(xiàng)選擇題

Floors aboard ship are（）.

A.frames to which the tank top and bottom shell are fastened on a double bottomed ship
B.transverse members of the ships frame which support the decks
C.longitudinal beams in the extreme bottom of a ship from which the ship's ribs start
D.longitudinal angle bars fastened to a surface for strength

單項(xiàng)選擇題

（）is not a static load.

A.Actual weight of the ship's structure，outfitting，equipment and machinery
B.Ballast load（weight）
C.Cargo load
D.Slamming and sloshing load

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For existing ships，（）is not an improvement to safety.

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Floors aboard ship are（）.

（）is not a static load.

For existing ships，（）is not an improvement to safety.