wordpress- Remove query strings from static resources

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Bids
1
Avg Bid (EUR)
300
Project Budget (EUR)
€30 - €250

Project Description:
I checked my website performance and I got a really good score but I want to make it better one of the things gtmetrix recommend is to "Remove query strings from static resources" I have no idea how to do that.,

and the 2nd part im using wordpress as a news blog with many categories and articles, and I saw similar website where the changing from one category to another is literally instant, not 1-2 seconds but really instant, I contact my host and they told me it could be " using a flash based creator to make it seem like switching between pages is really fast" If you need the website you can contact me and give you all the details.
thank you for your time

Skills required:
Graphic Design, HTML, PHP, Website Design, Wordpress
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Project posted by:
hrenos Cyprus
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