The gear ratios would look like A:B=1:9 and C:D=1:32 if you are just needing the gear teeth ratio. Not a lot of information to go off of from the question though
<span>"rws" means that the user has permissions to read, write and setuid. "r" means the user can read the file and "w" means that the user can write to the file. "s" stands for "setuid" (set user id) is a permission bit that allows the users to execute a program with the permissions of its owner. The "s" can also mean "setgid" (set group id) is a bit that allows the user to execute a program with the permissions of the group owner.</span>
The answer is commas. <span>When listing columns in the select list, commas should be used to separate the columns.</span>
Device management is the process of managing the devices in your computer.
In your computer you have the so-called device manager, in which all the drivers of your devices are installed. Device Manager allows you to monitor and manage each of its devices. You can also uninstall and update your devices in device manager. And the process of doing it is called device management. It is very simple to do this kind of stuffs as long you are familiar with your devices like mouse, printer, keyboard, etc.