When a diode is doped with either a pentavalent or a trivalent impurity its resistance will（）.
A.increase
B.decrease
C.make the resistance stable against variation due to temperature
正確答案：decrease
題目：When a diode is doped with either a pentavalent or a trivalent impurity its resistance will（）.
關鍵字：智慧樹
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