問題詳情
9.__________ means a tidal current that flows continually with the direction of flow changingthrough all points of the compass during the tidal period.
(A)Continuous current
(B)Reversing current
(C)Cycling current
(D) Rotary current
參考答案
答案：D
難度：困難0.285714
統計：A(1),B(0),C(1),D(2),E(0)
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