单项选择题
A.the Customs B.the Register Bureau of Shipping C.the Shipyard Fire Department D.a certified gas chemist
A.prevent engine overheating B.have proper air/gasoline fuel mixture ratio C.be liquid- and vapor-tight D.supply sufficient air to the intake manifold
A.engaged in the coastwise trade B.going foreign C.calling at ports in another country signatory to MARPOL 73/78 D.carrying cargoes listed in the MARPOL regulations