Question

7 multiple choice 1 point which industry first presented the benefits of adopting clean care service procedures? on - highway transport railway transport underground mining inter - city transit 8 multiple choice 1 point a danger sign has the letters danger spelled out in which color paint? black blue green red 9 multiple choice 1 point which is the preferred cleaner for modern fuel system components? brake cleaner electrical contact cleaner liquid wax

Explanation:

For question 7, underground mining was one of the first industries to recognize and present the benefits of clean care service procedures due to the harsh and dirty working environment. For question 8, by standard safety - color coding, the word "danger" on a danger sign is spelled out in black letters on a red background. For question 9, brake cleaner is not suitable for fuel system components, electrical contact cleaner is for electrical contacts, and liquid gasoline can be used to clean modern fuel - system components as it can dissolve many contaminants without causing damage to most fuel - system parts.

Answer:

1. Underground mining
2. Black
3. Liquid gasoline