阿摩線上測驗
21. A detailed report must be submitted to explain the cause of the service _____.
(A) display
(B) deny
(C) reply
(D) delay
答案：登入後查看
統計： A(6), B(2), C(6), D(28), E(0) #3492429
統計： A(6), B(2), C(6), D(28), E(0) #3492429
