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【单选题】
二极管导通的条件是加在二极管两端的电压 。
A.
正向电压大于PN结的死区电压
B.
正向电压等于零
C.
必须加反向电压
D.
以上都不对
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动力部分
B.
传动部分
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执行部分
D.
控制部分
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【单选题】汽车的转向器是汽车的
A.
动力部分
B.
执行部分
C.
传动部份
D.
控制部分
【单选题】汽车的转向器是 。
A.
动力部分
B.
传动部分
C.
执行部分
D.
控制部分
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