When oily ballast has been pumped overboard，an entry must be made in the（）.<br>A:Oil Record Book<br>B:Official Logbook<br>C:deck rough log<br>D:engine rough log

When oily ballast has been pumped overboard，an entry must be made in the（）.
A:Oil Record Book
B:Official Logbook
C:deck rough log
D:engine rough log

出自：海船船员证

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