阿摩線上測驗
34.What is the additive of lubricant oil to improve the cleanliness of surfaces?
(A)Oxidation inhibitor
(B)Corrosion inhibitor
(C)Detergent
(D)Alkaline agent
答案：登入後查看
統計： A(69), B(125), C(311), D(86), E(0) #1333600
統計： A(69), B(125), C(311), D(86), E(0) #1333600
