Typically HVAC (heating,
ventilation, air
conditioning) requires
which of the following in
order to repair the system
properly?
A. Formal training
B. Sub-contractors
C. Heavy equipment

your mom

now im just trying to get this to 20 characters hope it works hey it works hope it okay bye

i think it's a)sparta

ww1 weapons: tank. tanks were used for the first time in the first world war at the battle of the somme. they were developed to cope with the conditions on the western front. the first tank was called 'little willie' and needed a crew of 3.