搜题
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第1题

物理层的功能（） A.比特流的传输 B.比特流的流量和差错控制 C.路由选择和广域网连接 D.可靠的端到端的数据传输
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第2题

We should return the power to the communities and the people, so that they can____________ important issues in their own
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第3题

In order to_________ customers who don’t have credit cards, the company will soon allow shoppers to select products onli
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第4题

They sought to_________ the country________ the old rigid traditions and to open it up to different cultures of the worl
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