問題詳情
25. Which one is not the main function of detergent lubricating oil?
(A) Decreasing piston ring sticking
(B) Preventing lubricating in the engine
(C) Reducing wear of piston ring
(D) Reducing wear of cylinder
參考答案
答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)