What is the minimum number of deck officers，able seaman or certificated persons required for a lifeboat on a vessel in ocean service?（）<br>A:Two<br>B:Three<br>C:Four<br>D:Five

What is the minimum number of deck officers，able seaman or certificated persons required for a lifeboat on a vessel in ocean service?（）
A:Two
B:Three
C:Four
D:Five

出自：海船船员证

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