【单选题】
皮线光缆采用热熔方式，建议采用皮缆专用熔接机，原则上热缩套管需要加（）。___
A. 胶带
B. 线圈
C. 保护盒
D. 绝缘胶
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答案
C
解析
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室外光缆一般从左侧底部穿线洞进入分纤箱，通过固定装置对加强芯进行接地，并剥离外护层穿入套管。在左侧中央盘纤轮顺时针缠绕后进入右侧熔纤盘内。皮线光缆可从（）穿线洞进线，通过固定装置平行固定后，在熔纤盘一侧进线，在熔纤盘内按同一方向绕线至热熔管。___
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网速测试结果以KByte/s为单位，用户账户带宽则以Kbit/s、Mbit/s为单位。因此应向用户说明，如100M用户带宽（即100Mbit/s），其对应的最大理论网速为()。___
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