敷设于垂直管路中的导线，当长度超过（）时应在管口处和接续盒中加以固定 -题库考试答案搜索网

敷设于垂直管路中的导线，当长度超过（）时应在管口处和接续盒中加以固定

单选题

2021-07-17 23:33

A、<span style="font-family: 宋体;">30m</span>
B、<span style="font-family: 宋体;">20m</span>
C、<span style="font-family: 宋体;">10m</span>
D、<span style="font-family: 宋体;">40m</span>

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正确答案

A

试题解析

标签：安全工程专升本安全检测与监控 2019级毕业清考（考试分） 2019级第三学期期末考试

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