Chrome Portable - disabling only external extensions

Hi all!)
My English is bad, so I use google-translator, but I hope to express their thoughts more or less clear.
I'm doing a media presentation, and as a viewer, I favor Chrome portable with an additional parameter

--kiosk

Thus, in this two chrome extensions, except that more extensions should not load. So, in a normal local chrome installed a couple of extensions, and they are also loaded. Can I fix it somehow? That is to load only the internal extension?
Thank you for your attention)