Engineering controls are the physical changes that employers make to the work environment or to equipment that make it safer to use.
a) true b) false

True

Explanation:

Engineering controls are those techniques used to reduce or eliminate hazards of any condition, thereby protecting the workers.

These are mostly products that act as barriers between the worker and the hazard. This may include machinery or equipment. The common engineering controls used are glovebox, biosafety cabinet, fume hood, vented balance safety enclosure, HVAC system, lockout-tagout, sticky mat and rupture disc.

answer:

clock

explanation:

always running (on) sing each hour (chime) and the clock face (front)