• 2022-06-08
    In
    metal-semiconductor field effect transistor,
    the gate junction is an Ohmic contact.
  • 错误

    内容

    • 0

      A transistor is a semiconductor device used to electronic signals

    • 1

      For basic operation of a transistor the base-emitter junction is (    ) biased.

    • 2

      Spontaneous Brillouin<br/>scattering is generated through the interaction between the input<br/>light field and the thermally<br/>fluctuating acoustical fields______ .The feature of this effect is that the frequency shift of the<br/>scattering light is dependent on the scattering angle and theacoustic<br/>velocity<br/>______ in<br/>the medium.

    • 3

      Properties of X-ray include:() A: Penetrating<br/>effect: B: Fluorescent<br/>effect: C: Sensitization<br/>effect: D: Ionization<br/>effect: E: All<br/>of above

    • 4

      The<br/>magnetic field lines are used to visually describe the distribution<br/>of the magnetic field around the magnet. For the following<br/>statement,( <br/>) is wrong. A: Each<br/>magnetic field line is a closed loop curve B: No<br/>two magnetic field lines can cross each other C: The<br/>length of the magnetic field line reflects the strength of the<br/>magnetic field D: The<br/>tangential direction of any point on any of the magnetic lines is the<br/>direction of the magnetic field at that point