Answer:
The element is not a selection in the Interface preferences is:
UI Character Presets
Explanation:
The interface preferences is a section of the Set Preferences dialog, which contains settings related to the user interface for the display and configuration of certain features and dialogs, in accordance with the user's preferences. They include the UI Font Size, UI Language, and UI Scaling, with the exception of the the UI Character Presets. The UI Scale is the frontend extension of the actual screen resolution to the user. The UI Language configures the user's preferred language, just as the UI Font Size allows the user to choose a preferred font size for display on the screen.
A composite primary key<span> is a set of several primary </span>keys<span> that, together, uniquely identifies each record.</span>
Primary keys are used as identifiers of composite entities. In this case each primary key combination is allowed only once in the *:* relationship.
Other case where primary keys are used is as identifiers of weak entities, where the weak entity has a strong identifying relationship with the parent entity.
It is done to provide for better engine performance. It is important for two main reasons. One is that if one ignition system fails the other can for a time take care of it and hold its ground until you land or fix it. Another is that it is used for more efficient consumption of fuel and air which makes the engine work better.
What is the use for the secondary hard drive?
If it is to run another operating system, such as a Linux flavour or another version of Windows, you would need to:
1) correctly format your drive
2) Install your OS
If you are using the HDD alongside your current OS, you need to:
1) Lower the boot priority of that drive in your BIOS
2) Format your hdd for use in your OS.
(Use NTFS for Windows and HFS+ for OS X)