Engine: Engineering Safety

1. A Flammable liquids, greases, etc., where a blanketing effect is essential
2. B Electrical equipment where the use of nonconducting extinguishing agent is of first importance
3. C Metals
4. D Ordinary combustible materials where the quenching and cooling effects of quantities of water, or solutions containing large percentages of water, are of first importance

Tip: press A-D to answer