The two courses of action if the underwater hull of a ship is severely damaged are to plug the openings and to（）.<br>A:dewater the compartment<br>B:establish and maintain flooding boundaries<br>C:secure power to the compartment<br>D:counter flood to maintain even keel

The two courses of action if the underwater hull of a ship is severely damaged are to plug the openings and to（）.
A:dewater the compartment
B:establish and maintain flooding boundaries
C:secure power to the compartment
D:counter flood to maintain even keel

出自：海船船员证

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