#774240
When are the extraordinary resistance measurements of lightning-protection devices?
Варианты ответа:
  • After performance of repair works on the device of lightning protection and on the protected objects and close them
  • After natural disasters (hurricane, flood, earthquake, fire) thunderstorm emergency and intensity
  • Before the start of storm season
  • In all these cases
Тематика: Основы безопасности жизнедеятельности Основы безопасности жизнедеятельности (ОБЖ) Основы электробезопасности
Курсы в категории: Безопасность и правопорядок
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