My friend did his crj systems oral prior to his check ride ( a week) prior
the check airman went through the panel systematically asking what does this do , the test procedure for that item and the associated limitations that apply to each item .

He was also asked to state random flows and demonstrate them
He was then given a weight and balance and had to spin the CG wheel . He said the oral was a non event as he had been prepped for it well by the time he git to that stage of training . Hope this helps !FP