問題詳情

17.The communication cost of Inmarsat-C “TELEX” 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：C
難度：適中0.538462
統計：A(1),B(11),C(14),D(0),E(0)