Yadda ake gwajin girgizawa

Yadda ake dabbaka tsarin amfani da kwalbar allura da ake amfani da ita har tsawon lokaci

Wane yanayi ya kamata alluran rigakafi su kasance?

Using Top-Opening Refrigerators Without Baskets

Yadda ake duba vaccine vial monitor (VVM)