Заполните пропуски в инструкции следующими словами:
1) These ear protectors must be carried everywhere in the 1_______ hangar.
2) These 2_______ must be lubricated every day.
3) Drivers are required to check the 3_______, lights, tyres, and water before a long car journey.
4) Apprentices must always wear 4_______ in the workshop.
aircraft
gears
brakes
overalls