It's easy to tell that this "crew" is not USS Enterprise material just yet.
Commander Goddard: Radu, raise the shields.
Radu: How do I do that?
Commander Goddard: I don't know.
Radu sneezes, and snow flies out of his ears.
Thelma: His temperature is thirty-five degrees Celsius. Low, even for Andromedans. Oh, and his barometric pressure is dropping. I think he's going to snow.
Ghee, you think!
When the crew are trying to stop their doppelgangers, Miss Davenport encounters hers.
Evil Davenport: So now I guess you're going to give me demerits or faint or something?
Good Davenport: (very, very British) No, I believe I'll just punch your lights out. (Jumps into a Fighting Irish◊ fisticuffs pose.) Come and get it!