Analog Electronics
A quartz crystal oscillator consists of

 both series and parallel frequencies.
 neither series nor parallel frequency.
 only series resonant frequency.
 only parallel resonant frequency.

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Analog Electronics
The arrowhead on the transistor symbol points in the direction of

  conventional electric current flow in the emitter region.
  minority carrier flow in the emitter region.
  electron flow in the emitter region.
  majority carrier flow in the emitter region.

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