An International Oil Pollution Prevention Certificate (IOPP) for a "new" vessel ceases to be valid if （）.<br>A:it exceeds 3 years from date of issue<br>B:an alteration approved by the Captain of the Port is made<br>C:an intermediate survey has not be conducted within 12 months from the date that the IOPP was issued<br>D:the vessel is transferred to the flag of another country

An International Oil Pollution Prevention Certificate (IOPP) for a "new" vessel ceases to be valid if （）.
A:it exceeds 3 years from date of issue
B:an alteration approved by the Captain of the Port is made
C:an intermediate survey has not be conducted within 12 months from the date that the IOPP was issued
D:the vessel is transferred to the flag of another country

出自：海船船员证

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