問題詳情

138. In order to modernize the communications system, our system will be upgraded to handle ten extensions lines, with a built-in answering machine, conference calls and _______features.
(A) dialing-speed
(B) dial-speed
(C) speed-dialing
(D) speed-dial.

參考答案

答案:C
難度:適中0.410714
統計:A(16),B(9),C(23),D(4),E(0)

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