問題詳情

31. Which feature is indicated by a gradually rising pressure in the crankcase of trunk piston diesel engines?
(A) Crankshaft wearing
(B) Blow-by
(C) Water leakage
(D) Fuel dilution

參考答案

答案：B
難度：適中0.65
統計：A(8),B(26),C(2),D(2),E(0)