2. 计算机
  3. Network　managers　have　long(140)practical　voice-over-IP(VOIP)solutions.　VOIP(141)ease　network　management　and　decreases　costs　by　c

Network　managers　have　long(140)practical　voice-over-IP(VOIP)solutions.　VOIP(141)ease　network　management　and　decreases　costs　by　c

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问题 Network　managers　have　long(140)practical　voice-over-IP(VOIP)solutions.　VOIP(141)ease　network　management　and　decreases　costs　by　converging　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(142)tremendous　amounts　of(143)in　long　distance　phone　bills,　provided　that　solution　delivers　POTS-like　voice(144)over　the　Internet.
选项 A、promise
B、promised
C、promises
D、promising
答案C
解析
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