【单选题】听力原文: American coast guard officials in Florida say they have returned to Cuba a group of would-be migrants who try to make their way to the United States in an unusual vessel, a floating truck. They ...
【单选题】Said cargo spaces having been cleaned in accordance with the Regulations of the United States Coast Guard and the Code of Federal Regulations so far as applicable,and in accordance with the recommenda...
A.
CERTIFICATE OF CLEANLINESS
B.
FUMIGATION AND GAS FREE CERTIFICATE
C.
CERTIFICATE OF CLASS
D.
INTERNATIONAL OIL POLLUTION PREVENTION CERTIFICATE