問題詳情
40. Lubricating-oil filters remove contaminants more efficiently if thelubricating oil is under what condition？
(A) under high pressure
(B) under low pressure
(C) heated to reduce viscosity
(D) cooled to increase viscosity
參考答案
答案：C
難度：適中0.466667
統計：A(5),B(6),C(14),D(5),E(0)