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)

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