Answer: B. Multi-user, multitasking.
Explanation:
Multiuser/Multitasking operating system refers to an operating system that's powerful and supports more than one user at a time, and can also perform more than one task at a time.
The operating system allows many users to use the programs which are running concurrently on a single network server. It is the computer operating system that would be best for a large corporation. An example is UNIX.
Pressure and heat I believe is the answer not sure
Answer:
Pero un campo cuyo tipo de datos es Número solo puede almacenar datos numéricos. ... Por ejemplo, los valores que se almacenan en un campo Texto solo pueden contener ... Para más información, haga clic en los tipos de datos siguientes. ... Controla la conversión de frases en las versiones asiáticas de Windows.
The answer is C. Primary Key. I hope this helps