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Which benefit does digital subscriber line (DSL) systems for broadband access provide to the user?（）

单选题
2022-06-28 22:07
A、Secure access to company extranet
B、Dedicated lines for high security data transfer
C、Simple solution for high-quality digital video using coaxial cable
D、Data and audio signals that share the same communications infrastructure
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正确答案
D
试题解析
标签： CMS专题
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