#774864

#774864: When an inspection and inspection of devices is performed lightning protection for ensuring constant reliability?

When an inspection and inspection of devices is performed lightning protection for ensuring constant reliability?
Варианты ответа:
  • Once a year according to the schedule
  • Once a year before a storm season
  • Once in three months
  • Once in three years

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Тематика: Монтаж электрооборудования Основы электротехники Электрические и электронные аппараты
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