这是该命令的输出systemd-analyze blame：
我可以禁用其中多少个？
38.257s plymouth-quit-wait.service
31.175s snapd.service
29.485s mysql.service
22.252s systemd-journal-flush.service
16.657s networkd-dispatcher.service
14.747s udisks2.service
12.817s dev-sda2.device
11.724s NetworkManager-wait-online.service
8.506s accounts-daemon.service
7.890s ModemManager.service
7.342s dev-loop6.device
7.197s dev-loop19.device
7.190s dev-loop10.device
6.637s dev-loop11.device
6.501s dev-loop8.device
6.484s polkit.service
6.464s dev-loop4.device
6.428s NetworkManager.service
6.399s dev-loop15.device
6.316s dev-loop17.device
6.272s dev-loop9.device
6.209s dev-loop7.device
6.173s dev-loop14.device