問題詳情

31. Which type of bearing may be lubricated by seawater in a main propulsion shafting system?
(A) Thrust bearing
(B) Ball bearing
(C) Crosshead bearing
(D) Stern bearing

參考答案

答案:D
難度:適中0.48
統計:A(22),B(13),C(17),D(48),E(0)

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