#774574

#774574: To which class belongs the hazardous area in which explosive mixtures of combustible dust with air is ncpv less than 65 grams per cubic meter and there is a constant

To which class belongs the hazardous area in which explosive mixtures of combustible dust with air is ncpv less than 65 grams per cubic meter and there is a constant
Варианты ответа:
  • 20 grade
  • 21 class
  • 22 class

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Тематика: Автоматические системы пожаротушения и связь Пожарная безопасность Техника безопасности и санитария
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