問題詳情

16.The communication cost of Inmarsat-B “FAX” was charged by in ordinary case.
(A)air time by unit: minute
(B)air time by unit: second
(C)bits or alphabet
(D)Internet service provider

參考答案

答案:B
難度:簡單0.757576
統計:A(1),B(25),C(7),D(0),E(0)

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