是的。

是的。
不是应该是的,都是官方的源。
可以终端执行如下命令,贴出来大家可以帮你核实:cat /etc/apt/sources.list /etc/apt/sources.list.d/*.list |grep -v ^#
deb https://home-packages.chinauos.com/home plum main contrib non-free
deb https://home-store-packages.uniontech.com/appstore dragon appstore
deb https://pro-driver-packages.uniontech.com eagle non-free
deb https://home-packages.chinauos.com/printer eagle non-free
deb http://ppa.launchpad.net/eh5/pulseaudio-a2dp/ubuntu bionic main
可以终端执行如下命令,贴出来大家可以帮你核实:cat /etc/apt/sources.list /etc/apt/sources.list.d/*.list |grep -v ^#
懂得的帮忙核实

deb https://home-packages.chinauos.com/home plum main contrib non-free
deb https://home-store-packages.uniontech.com/appstore dragon appstore
deb https://pro-driver-packages.uniontech.com eagle non-free
deb https://home-packages.chinauos.com/printer eagle non-free
deb http://ppa.launchpad.net/eh5/pulseaudio-a2dp/ubuntu bionic main
这个是第三方的,是不是装了什么音频工具。

Popular Ranking
ChangePopular Events
More

中文 
系统使用的时间长了,源列表里好像很多东西。后缀
uniontech.com和deepin.com的源都是深度的官方源吧?