阿摩線上測驗
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
答案：登入後查看
統計： A(42), B(26), C(33), D(92), E(0) #1855352
統計： A(42), B(26), C(33), D(92), E(0) #1855352