qrepolist:
deb http://q4os.org/q4repo q4os-1-0-cn main
deb http://q4os.org/q4repo q4os-2-0-cn main
deb http://q4os.org/qtderepo stretch main
deb http://ftp.debian.org/debian/ stretch main contrib non-free
deb http://security.debian.org/debian-security/ stretch/updates main contrib non-free
deb http://ftp.debian.org/debian/ stretch-updates main contrib non-free
deb http://www.deb-multimedia.org stretch main non-free
deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main
