After-class solutions to the fourth edition of Surveying edited by Hefei University of Technology, chongqing jianzhu university, Tianjin University and Harbin Jianzhu University.

The second question:

The third question:

The fourth question:

The fifth question:

The sixth question:

This part of the extended materials mainly examines the knowledge points of surveying:

A science that studies how to determine the plane position and elevation of ground points, draw the topography and other information of the earth's surface, and determine the shape and size of the earth. The contents include: general surveying, geodesy, geodesy, gravity surveying, topographic surveying, photogrammetry, engineering surveying and oceanography.

Its main task has three aspects:

The first is to study and determine the shape and size of the earth and provide necessary data and information for earth science.

The second is to draw the features and landforms of the earth's surface.

The third is to design the design results on the drawings to the site.