how I can exclude custom post type from ratings?

The easiest would be to add a unique category to ask these posts and then exclude the category.

Thanks but is not so easy,the posts are uncategorized and maked from plugin D&Q, can you tell me another way?
Thank you very much!

If you can find a short PHP code that checks if the current post is custom post type, then I can guide you where to add it in the plugin’s code to make the magic ??