單項(xiàng)選擇題

A.increase their strength
B.provide drainage from the decks
C.relieve deck stress
D.All of the above

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A.increases
B.decreases
C.remains the same
D.may increase or decrease depending on the fineness of the vessel's form

A.lower than the center of gravity
B.at the same height as the center of gravity
C.higher than the baseline
D.on the longitudinal centerline