California Barber

What is the primary difference between sanitation and disinfection?

1. ASanitation reduces the number of germs to a safe level, while disinfection destroys most pathogens on non-living surfaces正确
2. BThey both destroy all microbial life including spores
3. CSanitation destroys pathogens, while disinfection only removes visible dirt
4. DThere is no practical difference between the two terms

为什么: Sanitation lowers the level of germs on a surface to a level considered safe, typically by cleaning with soap and water. Disinfection goes further, destroying most disease-causing organisms on hard non-porous surfaces, though it does not necessarily kill bacterial spores.CCR Title 16 §979

On a clipper, a longer guard (attachment comb) will:

1. ARemove the blade
2. BLeave the hair longer正确
3. CCut the hair shorter
4. DHave no effect on length

为什么: The guard, or attachment comb, holds the blade farther from the scalp, so a higher-numbered guard leaves more length. Removing the guard cuts closest to the skin.