#1077060
Vacuum tubes were discovered to have a number of flaws, for example … (choose 3 correct answers)
Варианты ответа:
  • they produced very little of heat
  • they took 1 to 2 minutes to warm up
  • two similar tubes had varying output and operational properties
  • they required high power supply voltages of 300 volts dc and higher
Курсы в категории: Информационные технологии