工程测量（Engineering surveying）.docVIP

工程测量（Engineering surveying） 1. Fill in the blanks 01. The baseline of the measuring work is the plumb line. The datum of the field measurements is the ground level 03. In order to make the coordinate of the gaussian plane rectangular coordinate system constant greater than zero, the axis is shifted from the central meridian to 500 kilometers. The normal direction of linear orientation is the true meridian direction, the vertical direction and the magnetic meridian direction. The normal direction of linear orientation is the true meridian direction, the vertical direction and the magnetic meridian direction. The usual standard direction of linear orientation is the true meridian direction, the vertical direction and the magnetic meridian direction. The reason that the telescope produces parallax is that the image is not accurately formed on the cross. The observation sequence of the post-front - and rear measures of the rear - and rear measures can attenuate the effect of the instruments sinking. 09. The difference between the center of the center of the sighting center and the horizontal center of the horizontal disk is called the aberration. 10. The function of the silk and the lower filaments of the theodolite and the cross wire of the water level is to measure the horizon. 11. In order to ensure the direction and slope of the roadway, the calibration of the midline and the waist line is usually required to ensure the direction and slope of the roadway. 12. In order to ensure the direction and slope of the roadway, the calibration of the midline and the waist line is usually required to ensure the direction and slope of the roadway. 13. The index of measuring accuracy has medium error, limit error and relative error. 14. The commonly used rendezvous and fixed point methods have front intersection, side intersection and resection. 15. The commonly used rendezvous and fixed point methods have front intersection, side intersection and resection. The starting data of