Artistic Media

Hi guys, I'm a new comer, and Now I get some case on using artistic media, 

I have an artwork and I'm trying to use artistic media to draw, after that I press CTRL + K, to separate them in to curve and hairline, make me easy in just use artistic media only, 

The problem is,  i should select the hairline which CTRL + K one by one.. any shortcut to select all the hairline ? because I just need artistic media that is curve now.