$12.$ Simultaneous engineering is an engineering activity, it has nothing to do with the purchasing and marketing.

$($ True False $)$

$(3\backslash \%)$

$13.$ Doing things in parallel is very important in concurrent engineering.

$($ True False $)$

$(3\backslash \%)$

$14.$ If the tolerance of a product should be held within $\backslash (\backslash$pm $0\mathrm{.}001\backslash )".$ Then a grinding machine is needed to make this part.

$($ True False $)$

$(3\backslash \%)$

$15.$ The most effective way for design simplification is to

$(9\backslash \%)$