問題詳情
44 Oil penetrates into the structure of the plumage of birds and the fur of mammals, reducing its insulating ability, andmaking them more vulnerable to temperature fluctuations and much less ________ in the water.
(A) buoy
(B) buoyage
(C) buoyancy
(D) buoyant
參考答案
答案：D
難度：困難0.276596
統計：A(3),B(19),C(9),D(13),E(0)