問題詳情
39.Which operation is necessary to enable new piston rings in a diesel engine to wearand conforms with the cylinder liner after an overhaul?
(A)Underway
(B)Progressive acceleration
(C)Running-in
(D)Maneuvering
參考答案
答案：C
難度：適中0.555556
統計：A(1),B(8),C(15),D(2),E(0)