It supports none of the parameters that would be necessary and very specifically excludes the left and right alignment attributes for images. (guidohenkel.com)
Finally there is a new Ragged Right Alignment feature that allows you to read using left - aligned (ragged right) text. (goodereader.com)
Text Adjustment: All Kindles have the same three line spacing and margin settings, with the option to use ragged right alignment or centered. (blog.the-ebook-reader.com)