Black smoke coming from a boiler can be caused by （）. -题库考试答案搜索网

Black smoke coming from a boiler can be caused by （）.

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2022-02-21 16:48

A、low water level
B、low oil pressure
C、excessively high fuel pressure
D、an improper air/fuel ratio

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正确答案

D

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标签：船舶辅助机械

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