問題詳情

31. A buoy composed of a tall central structure mounted on a broad flat base calls _____.
(A) station buoy
(B) spherical buoy
(C) discrepancy buoy
(D) pillar buoy

參考答案

答案:D
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0)

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