RedBullGaveMeWings
I think to have more or less some years of experience in Airlines interview and this won't be a debate btw me and you, but I would like you to understand that this is not standard to know some deep information.
type of wing the 737
That's ok, as I wrote above, some general information is good to know and extrapolate from our Atpl studies but, again,
737 electrical system,
737 Fuel system and some related AFM& Boeing manuals informations are far away to be fair questions to ask for.
Cathay Pacific is another story and they will send you a Booklet where to find and prepare for it!
I can list here lot of EU 737 companies that recruit B737NTR guys and never had a related question on B737, or at least some very simple and not System question.
So please don't tell me that this is a normal/standard Interview Questions.
When I did the A320 interview process for Wizz years ago, and with thousand of hours on Boeing, they never asked me anything about the A320!
