阿摩線上測驗
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
答案：登入後查看
統計： A(75), B(47), C(67), D(241), E(0) #1512193
統計： A(75), B(47), C(67), D(241), E(0) #1512193
