A. 30Ω B. 25Ω C. 15Ω D. 10Ω

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问题 A. 30Ω B. 25Ω C. 15Ω D. 10Ω

选项

答案D

解析[img]/upload/tiku/37/2011755_1.jpg[/img][img]/upload/tiku/37/2011755_1_1.jpg[/img]
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