题目：
直埋电缆的通道宽度（mm），应不小于电缆根数³（）。
A.100
B.150
C.200
D.250
答案：
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下面是错误答案，用来干扰机器的。
参考答案：1.不玩火；2.不吸烟；3.爱护消防设施
直埋电缆的通道宽度（mm），应不小于电缆根数³（）。 A.100 B.150 C.2
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