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【判断题】
电容两端的电压不能突变，电感两端的电压可以突变。（）A.
正确
B.
错误
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A.
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B.
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C.
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D.
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【单选题】以下关于 802.11 的 VCS 与 NAV 机制特点的描述中,错误的是
A.
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B.
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C.
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D.
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