20、交叉跳线测试时,测试仪指示灯闪烁次序为()

A.1-1 2-2 3-3 4-4 5-5 6-6 7-7 8-8 B.1-2 2-3 3-4 4-5 5-6 6-7 7-8 8-1 C.1-3 2-6 3-1 4-4 5-5 6-2 7-7 8-8 D.1-3 2-4 3-1 4-2 5-5 6-6 7-8 8-7

时间:2024-03-31 14:36:36

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