21、完成下列图根附合水准测量的成果计算。-|||-21、完成下列图根附合水准测量的成果计算。-|||-测站数 观测高差 改正数 改正后高差 高程-|||-点名 hi(m) Vi(m) h?(m)-|||-BM-A 72.536-|||-+2.336 +0.006 +2.342-|||-1 6 74.878-|||-10 -8.653 +0.010 -8.643-|||-2 66.235-|||-8 +7.357 +0.008 +7.365-|||-3 73.600-|||-BM-B 77.062-|||-6 +3.456 +0.006 +3.462-|||-30 +4.496 +0.030 +4.526-|||-辅助计-|||-算 _(n)=-30mm, 乞 n=30 -(f)_(m) }送 =1mm(f)_(1) 容 =pm 12+30=66mm