单选

The booster pump, which supplies diesel oil to , should have a possibility of being powered by compressed air or by emergency power.

A.the main engines
B.the auxiliary engines
C.the emergency generator engine
D.the auxiliary engines and the main engine(s)

试题出自试卷《海船船员考试轮机部三管轮模拟题4(轮机英语)》

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