What is the best way to prevent carbon monoxide poisoning

What are listed in the vertical columns across the top of the event editor? a. file names b. conditions c. check marks d. action types

All of these are true about using adhesive except: a. dissimilar materials can be joined. b. mixing tips are product and material specific. c. a specific application gun may be required. d. two-part adhesives are dispensed using two mixing tips

How would you categorize the software that runs on mobile devices? break down these apps into at least three basic categories and give an example of each.