A、导 通
B、截 止
C、击 穿<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1506587396456cf098b9f760144b496c5da34e1ca2a78image1.png">
A、导 通
B、截 止
C、击 穿<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1506587396456cf098b9f760144b496c5da34e1ca2a78image1.png">
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