Final answer:
The emergency exit is a plug-type hatch that is designed to be removed quickly in emergencies without the need for a key to open it. It provides a safe and quick escape route in dangerous situations.
Step-by-step explanation:
The emergency exit is a plug-type hatch that is designed to be removed quickly in emergencies. It is not necessary to have a key to open it and it can be opened from both the inside and the outside. The purpose of an emergency exit is to provide a safe and quick escape route in case of an emergency, such as a fire or other dangerous situations.