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Which of the following channels, when used in close proximity to one another, provide the BESTprotection against crosstalk?（）
- A、1 and 11
- B、2 and 10
- C、6 and 1
- D、6 and 11
参考答案
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单选题Which of the following channels, when used in close proximity to one another, provide the BESTprotection against crosstalk?（）A
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