1.(本小问共13.0分)
(1)WL1:
PC20:(3.3-0.45-1.8)+2.2+2.6×2+4×6=32.45m(1.0分)
PC25:1.2+(3.3-1.3)=3.20m(1.0分)
BV2.5mm2:32.45×3+3.2×4+(0.3+0.45)×3=112.40m(1.0分)
(2)WL2:
PC20:(3.3-1.8-0.45)+2.4+2.7+1+(3.3-1.3)=9.15m(1.0分)
BV25mm2:9.15×3+(0.3+0.45)×3=29.70m(1.0分)
(3)WL3:
PC20:(3.3-1.8-0.45)+2.9+4.9+1.6+(3.3-1.3)=12.45m(1.0分)
BV2.5mm2:12.45×3+(03+0.45)×3=39.60m(1.0分)
(4)WL4:
PC25:1.8+6.2+12.1+0.3×3-21.00m(1.0分)
BV4mm2:21×3+(0.3+0.45)×3=65.25(1.0分)
(5)汇总:
PC20:32.45+9.15+12.45=54.05m(1.5分)
PC25:3.2+21=24.20m(0.5分)
BV2.5mm2:112.4+29.7+39.6=181.70m(1.5分)
BV4mm2:65.25m(0.5分)
2.(本小问共12.0分)

3.(本小问共2.5分)

4.(本小问共12.5分)
人工费:64.8÷10+4.3×(2÷40)=6.70元(0.5分)
辅助材料费:5.1÷10+0.9×(2÷40)=0.56元(0.5分)
主材费:20×1.06+10×(2÷40)×1.02=21.71元(0.5分)
管理费和利润:6.70×(45%+15%)=4.02元(0.5分)
综合单价:6.48+0.51+21.2+3.89=32.99元/m2(1.0分)