$1\mathrm{.}1$ Illustrate the difference between maintenance, reliability and reliability centred maintenance by means of examples. $(6)$

$1\mathrm{.}2$ Differentiate between evident and hidden function by means of examples. $(4)$

$1\mathrm{.}3$ There are different categories of secondary functions. By means of examples, illustrate the functions of any asset of your choice that indicates:

$1\mathrm{.}3\mathrm{.}1$ appearance; $(1)$

$1\mathrm{.}3\mathrm{.}2$ efficiency; $(2)$

containment.