Oil water separators are used to ensure that ships dont discharge oil when pumping out （）.<br>A:ballast water<br>B:boiler water<br>C:bilge water<br>D:sewage water

Oil water separators are used to ensure that ships dont discharge oil when pumping out （）.
A:ballast water
B:boiler water
C:bilge water
D:sewage water

出自：海船船员证

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