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The surface potential changes significantly with gate voltage once the threshold voltage is reached.( )

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The inversion layer charge in the MOS capacitor will not respond to a differential change in capacitor voltage under the high-frequency condition.( )

There is an electron inversion layer already exists with zero gate voltage in the depletion mode MOSFET.( )

Three operating conditions in the MOS capacitor: ______ , ______ , ______ .

The advantages of the GaAs MESFET include ( ).

A. higher electron mobility,
B. smaller transit time and faster response;
C. decreased parasitic capacitance
D. a simplified fabrication process

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