French is the official language in 29 countries, most of which are members of la francophonie, the community of French-speaking countries.It is spoken as a first language in France, southern Belgium, western Switzerland, Monaco, certain parts of Canada and by various communities elsewhere.rench is the official language in 29 countries, most of which are members of la francophonie, the community of French-speaking countries.
Study sets matching term:drip+irrigation = most efficient method of irrigation
Irrigation pump efficiency is a measure of how. well the pump converts electrical energy installed but they often suffer physical damage into. useful work to move water. The aim of careful. pump selection and regular pump maintenance is. to have the pump performing as efficiently as.