Yes you can.
Inside the studio, make sure the cover or interior is the active page in the work area.
Click "Download" from the drop down menu, then select "Download Current Page CMYK (Printed Books).
Go to your default download folder now on your computer and you will see a PDF (it will not be in a zip file).
If you double click on it, you will see that it is only the cover or the interior page you had selected.