A: The Admissions Committee will view each page of the PDF separately. If you wish to maintain the spread, we suggest that you turn a two-page spread into a single page in a PDF. Otherwise, what would have been two pages in a printed portfolio will be two pages in the PDF.
Typically, the admissions committees who review the applications prefer individual pages, meaning that a spread would count as 2 pages rather than 1. If you would like to reformat the spread so that it would fit on 1 page you are welcome to, but if not keep in mind that each spread would count as 2 pages.