Answer to Question 1
Class A extinguishers, class B extinguishers, class C extinguishers, class D extinguishers
Answer to Question 2
Keep all hand tools sharp, clean, and in safe working order. Defective tools should be repaired or replaced. Use correct, proper fitting wrenches for nuts, bolts, and objects to be turned or held. Do not work in the dark; use plenty of light. Do not leave tools on the floor.