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全部科目 > 水路交通运输技能考试 > 海船船员考试 > 船舶管理(轮机专业) > 轮机英语 > 船舶电气与船舶安全

单项选择题

Heavy residual fuel oils are heated prior to centrifuging to （）

A.reduce fuel weight
B.increase specific gravity
C.separate fuel from lube oil
D.reduce fuel viscosity

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