单选题DSL（DIGITAL SUBSCRIBER LINE）是指（）。A模拟用户线路技术B数据用户线路技术C图像用户线路技术D数字用户线路技术
单选题
DSL（DIGITAL SUBSCRIBER LINE）是指（）。
A
模拟用户线路技术
B
数据用户线路技术
C
图像用户线路技术
D
数字用户线路技术
参考解析
解析：
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