Hi teachers,

I've scanned some of the resume writing book at bookstore,I've noticed most of them use "work experience" or "project experience" as the heading,following a list of employment.However,some use "work experiences" just made me so confused. which one is correct or wrong?

In cover letter,assuming you have experience working for more than 1 employers,should I use
"I have more than 6 years experience in the textile industry,including two years as phone order representative." ? or
"I have..... experiences....." ?