单选题Progressive flooding is controlled by securing watertight boundaries and（）.Atransferring water ballastBjettisoning cargoCpumping out flooded compartmentsDabandoning ship
单选题
Progressive flooding is controlled by securing watertight boundaries and（）.
A
transferring water ballast
B
jettisoning cargo
C
pumping out flooded compartments
D
abandoning ship
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