슬라이드
https://docs.google.com/presentation/d/e/2PACX-1vSi2NY_QIBjda9FIbaMt3HY5diW-rXbQsGpza96uRPCx4274UuOLjlze3sZDc7oY8ou2g6J1l9hQePr/pub?start=false&loop=false&delayms=3000
슬라이드
https://docs.google.com/presentation/d/e/2PACX-1vSi2NY_QIBjda9FIbaMt3HY5diW-rXbQsGpza96uRPCx4274UuOLjlze3sZDc7oY8ou2g6J1l9hQePr/pub?start=false&loop=false&delayms=3000