阿摩線上測驗
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
答案：登入後查看
統計： A(10), B(42), C(109), D(22), E(0) #625455
統計： A(10), B(42), C(109), D(22), E(0) #625455
