問題詳情

9. The lubricating-oil_____ employs the centrifugal force to remove very small particles fromthe lubricating oil.
(A) strainer
(B) filter
(C) purifier
(D) pump

參考答案

答案：C
難度：適中0.6
統計：A(2),B(5),C(15),D(1),E(0)