問題詳情
37.Which device is used in a diesel engine to inject a metered quantity of lubricating oil into the cylinder as thepiston ring pack passes the injection points?
(A)Lubricator
(B)Camshaft
(C)Crosshead
(D)Piston rod
參考答案
答案：A
難度：簡單0.75
統計：A(18),B(2),C(1),D(3),E(0)