Questions

In 37 BC, Octavian became the most powerful man in the Roman Empire for 44 years under the titles of Augustus, which meant 'holy' and imperator, meaning 'Victorious general'. He also called himself Princeps, 'first citizen of the state'. The period of Roman history beginning with his rule upto A.D 284 is called the principate. His rule and the period following it were  peaceful and  are known in history as 'Pax Romana' which means 'Roman Peace'

The data bus is Bi-directional because the same bus is used for transfer of data between Micro Processor and momory of input / output devices in both the direction.

Neurons are the functional units of the nervous system in the body.

Acute diabetes results in the formation of acetone in the body. Hence such patients smell of acetone.

 A Lighthouse

Any of the above given options can be a reason for the damage of the relationship of a couple or a two families or two friends etc...

Without trust relationship cannot be maintained, people not spending time with one another or without meeting the expectations of the opponents can also damage the relationship.

A locked file can be accessed by only one user.