what is the main purpose of coffee break
Break (work) A coffee break in the United States and elsewhere is a short mid-morning rest period granted to employees in business and industry, corresponding with the Commonwealth terms "elevenses", "smoko" (in Australia), "morning tea", "tea break", or even just "tea". An afternoon coffee break, or afternoon tea, often occurs as well.
My Ántonia
Import quota Quotas, like other trade restrictions, are typically used to benefit the producers of a good in that economy.
Limit of a function (the Dirichlet function) has no limit at any x-coordinate.