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)