A、<span style="font-family: 宋体; font-size: 14px;"></span><span style="font-family: 宋体; line-height: 31px; text-indent: 36px;">外加电压使稳压二极管导通 </span></p><p style="text-indent:36px;line-height:31px"></p><p><span style="font-family: 宋体; font-size: 14px;"></span></p>
B、<span style="font-family: 'Times New Roman';"><span style="font-family: 宋体;">外加电压使稳压二极管截止</span></span>
C、<span style="font-family: 宋体;">不能确定</span><span style="font-family: 'Times New Roman';"> </span>
D、<span style="font-family: 'Times New Roman';"><span style="font-family: 宋体;">外加电压使稳压二极管</span></span><span style="font-family: 宋体;">反向</span><span style="font-family: 'Times New Roman';">击</span><span style="font-family: 'Times New Roman';">穿</span>
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