नदी प्रशिक्षण कार्यासाठी खालीलपैकी कोणत्या पद्धतींचा वापर केला जाऊ शकतो?

When a river starts meandering, the sediment carrying capacity:

If D is the scour depth measured below the bed, then the width of a launching apron will generally be equal to:

A river training work is generally required when the river is: