Is it possible that 3 years old girl like to play robot?

Why not? There is no conclusive study that toys influence gender orientation if that's what you're worried about. My friend who is a doctor told me that he used to play with his sister's doll as well as his own action figures and pretended that they were all his patients. I played with action figures and trucks when I was younger and was an all-round tomboy until puberty kicked in. I'm the biggest girly-girl you can find now but if someone invites me to a round of soccer, I'd gladly join in.