单项选择题
A.high B.low C.determined by the components that are external to the device D.constantly changing
The piecewise linear model，equivalent circuit of the di...
单项选择题The piecewise linear model，equivalent circuit of the diode consists of（）.
A.a junction capacitor，a battery，a small resistor，and the ideal diode B.a battery，asmallresistor，and the ideal diode C.a battery and the ideal diode D.the ideal diode
The characteristic of an ideal diode are those of a swi...
单项选择题The characteristic of an ideal diode are those of a switch that can conduct current（）.
A.in both directions B.in one direction only C.in both directions but in only one direction at a time D.depends on the circuit it is used in
Which of the following is not a commonly used semicondu...
单项选择题Which of the following is not a commonly used semiconductor material’？（）
A.carbon B.lead C.silicon D.germanium
