阿摩線上測驗
16. The basic components of a modern digital telecommunications system must _______ transmitting voice, data,
radio, and television signals.
(A) enable of
(B) be able to
(C) be capable to
(D) be capable of
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統計： A(20), B(120), C(33), D(183), E(0) #2430765
統計： A(20), B(120), C(33), D(183), E(0) #2430765
