Fresh grad here, and I need some help.

This is basically the job description:
https://www.dropbox.com/s/d9zpqf8glkos6ix/help%201.png

And this is what they elaborated on what would be asked in my interview:

This 1st round interview will be focus on your past job experience / technical knowledge. Depending on the availability of our Senior Managers, the interviewer panel could be of 1 or 2 persons together with a representative from the HR.
 
There shall be some technical written tests (on circuit design or programming) on an adhoc basis. Nevertheless, most of the evaluation of your technical skill shall be via verbal.

I'll admit that I am out of my league here; back in my engineering course, there are some things relate, but mostly it's more focused for aviation stuff. And I sent out for this application without much hope. And being taught in Russian, with that being my third worst language, I didn't really paid attention much... So wondering what can be asked in this scenario?

I think that I should start with power amp designs? And which basics? Honestly I can't really recall at all unless someone jogs my memory.

And my interview is on Friday, so I got to be as prepared as I can by Thursday. Sorry for this tall order...