問題詳情
13.Which operation is necessary to enable new piston rings in a diesel engine to wear toconformity 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0.521739
統計：A(0),B(4),C(12),D(4),E(0)