If separating effect is not good, we can improve it by （）<br>A:flushing separator with hot water<br>B:increasing water supply flow<br>C:heat oily water properly<br>D:opening manual oil discharge value

If separating effect is not good, we can improve it by （）
A:flushing separator with hot water
B:increasing water supply flow
C:heat oily water properly
D:opening manual oil discharge value

出自：海船船员证

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