問題詳情

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

參考答案

答案:D
難度:適中0.542857
統計:A(9),B(9),C(14),D(38),E(0)

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