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【多选题】
In a MOS with a p-type substrate, two sources of electrons changing the charge density of inversion layer are ________
A.
Diffusion of minority carrier electrons from the substrate across the space charge region
B.
Diffusion of electrons from the metal
C.
Thermal generation of electron-hole pairs within the space charge region
D.
Therma generation of electron-hole pairs within the oxide
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【单选题】3 to make Qifeng cake, adding ( ) is beneficial to protein baking.
A.
Soft white sugar
B.
White sugar
C.
Sugar powder
【单选题】The depletion-type MOSFET devices are ___________
A.
The creation of the inversion layer charge
B.
The creation of the accumulation layer charge
C.
A channel already exists at threshold gate voltage
D.
A channel already exists at zero gate voltage