問題詳情

12.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：簡單0.705882
統計：A(3),B(0),C(2),D(12),E(0)