试题与答案

三芯扇形绝缘线芯成缆外径计算公式是()(h为扇形绝缘线芯高度,D为成缆外径)A.D=

题型:单项选择题

题目:

三芯扇形绝缘线芯成缆外径计算公式是()(h为扇形绝缘线芯高度,D为成缆外径)

A.D=2.42h

B.D=2.31h

C.D=2.15h

D.D=2.7h

答案:

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参考答案:100

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