船舶动力装置题库2022考试试题解析(6Y)

1. [单选题]某曲柄的两主轴承高于相邻主轴承，曲轴轴线呈拱腰形，则其Δ⊥（）。

A. ＞0
B. ＜0
C. ＝0
D. 不一定

2. [单选题]上舵承发生（）时应换新。

A. 磨损
B. 穴蚀
C. 护圈或滚子破碎
D. 变形

3. [单选题]To successfully reduce an excessively high diesel engine exhaust gas temperature, you should （）.

A. reduce the engine driven fuel pump outlet pressure
B. retard the fuel injector timing to reduce power
C. increase the fuel rack setting
D. reduce the load on the engine

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