单选题Jettisoning weight from topside（）.Areturns the vessel to an even keelBreduces free surface effectClowers the center of gravityDraises the center of buoyancy
单选题
Jettisoning weight from topside（）.
A
returns the vessel to an even keel
B
reduces free surface effect
C
lowers the center of gravity
D
raises the center of buoyancy
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