問題詳情

39. What is the thin plate with the typical disk-shape and a hole that is normally used todistribute the load of a threaded fastener?
(A) screw
(B) grindstone
(C) washer
(D) hose clamp

參考答案

答案：C
難度：非常簡單1
統計：A(0),B(0),C(1),D(0),E(0)