A vessel is equipped with cross-connected deep tanks. In which situation should the cross-connection valve be closed?（）.<br>A:The tanks lie above the waterline and are filled<br>B:The tanks are partially filled with dry cargo<br>C:The tanks are partially filled with liquid cargo<br>D:The tanks are filled and lie below the waterline

A vessel is equipped with cross-connected deep tanks. In which situation should the cross-connection valve be closed?（）.
A:The tanks lie above the waterline and are filled
B:The tanks are partially filled with dry cargo
C:The tanks are partially filled with liquid cargo
D:The tanks are filled and lie below the waterline

出自：海船船员证

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