Question

true or false: all tools must be used whenever the operator is ready used only after being properly fitting and adjusted never used unless given approval by the instructor all all of the above true or false: safety glasses must be worn at all times in the shop, except when you are wearing a welding hood true false true or false: you should make sure all students and debris are clear of the machine before turning on the power true false is it best that any liquid spilled on the floor should be wiped up immediately because it: could stain the floor looks unsightly causes more work for the janitor may cause someone to slip and fall

Explanation:

1. Tools should be properly fitted and adjusted and instructor - approval may be needed, not just used whenever operator is ready. So the first set of options about tools, the correct one is that all of the above precautions are valid.
2. Safety glasses must be worn in the shop except when a welding hood is used as the hood provides eye protection.
3. It is essential to clear students and debris from the machine before power - on to ensure safety.
4. Liquid spills on the floor should be wiped up immediately mainly to prevent slips and falls.

Answer:

1. All of the above
2. true
3. True
4. may cause someone to slip and fall