2. 计算机
  3. Network　managers　have　long　awaited　practical　voice-over-IP(VOIP)solutions.　VOIP　promises(71)network　management　and　decreases　cos

Network　managers　have　long　awaited　practical　voice-over-IP(VOIP)solutions.　VOIP　promises(71)network　management　and　decreases　cos

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问题 Network　managers　have　long　awaited　practical　voice-over-IP(VOIP)solutions.　VOIP　promises(71)network　management　and　decreases　costs　by(72)a　company’s　telephony　and　data　infrastructures　into　one　network.　And　a　VOIP　solution　implemented　at　a　company’　s　head　-quarters　with　far　-reaching　branch　offices　can(73)tremendous　amounts　of(74)in　long　distance　phone　bills,　provided　that　solution　delivers　POTS　-like　voice(75)over　the　Internet.
选项 A、cash
B、money
C、space
D、time
答案B
解析
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