問題詳情

39.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：困難0.307692
統計：A(3),B(8),C(9),D(4),E(0)