#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