Answer:so what is your question
Explanation:
Food-grade lubricants must perform the same technical functions as any other lubricant: provide protection against wear, friction, corrosion and oxidation, dissipate heat and transfer power, be compatible with rubber and other sealing materials, as well as provide a sealing effect in some cases.
Answer:
first isolate all infected children
Because the ending of the conjugated verb “tells” us the subject.