The method of reversal ............

The constant vertical distance between two adjacent contours, is called ............

Location of contour gradient for a highway is best set out from ............

The curve composed of two arcs of different radii having their centers on the opposite side of the curve, is known .....…

Normal tension is that pull which ............

Contours of different elevations may cross each other only in the case of ............

The altitude of a traverse leg is obtained by multiplying its length by ............

Determining the difference in elevation between two points on the surface of the earth, is known as ............

The rise and fall method of reduction of levels, provides a check on ............