Engine 2014: Engineering Safety

1. A It is inflated by a small CO2 bottle that is automatically tripped when the front zipper is at the top of zipper track.
2. B It is inflated by a small CO2 bottle that is manually tripped.
3. C It is inflated by blowing through an inflation tube.
4. D It inflates by sea water bleeding into the flotation bladder and reacting with a chemical.

Tip: press A-D to answer