#774438
In which case, the element of the earthing switch have to be replaced?
Варианты ответа:
- If destroyed more than 90% of its cross section
- If destroyed more than 80% of its cross section
- If destroyed over 70% of its cross section
- If destroyed more than 60% of its cross section
- If destroyed more than 50% of its cross section
Курсы в категории:
Безопасность и правопорядок