√((43.09/1.22)^2+〖59.36〗^2 )
    (149.6×1000)/(7×360)
    (108.6×1000)/(7×360)
    √((27.70/1.22)^2+〖26.88〗^2 )
    (105.4×1000)/(7×560)
    (108.6×1000)/(7×560)
    (105400-0.3×108600)/(0.9×0.598×300)
    5.846/3×(2×106.906+181.613)/(106.906+181.613)
    108600/(0.8×0.76×300)
    5.846/2×(106.906+181.613)
    149600/(0.9×0.598×300)+108600/(0.8×0.76×300)
    6.2/3×(2×106.906+186.154)/(106.906+186.154)
    6.2/2×(106.906+186.154)
    3.852×10.7×(5.846-2.3)+10×(5.846-2.3)
    3.852×10.7×3.9+10×3.9
    0.260×(18.7×3.9+19×5.3+9.4×1.4+10.1×3.1+10.7×6.2+20)+10×10.7
    0.260×(18.7×3.9+19×5.3+9.4×1.4+10.1×3.1+20)+10×4.5
     (12+(26-12)/(50000-10000)*(14993.83-10000))*1.0*0.8
    （12+（26-12）/（50000-10000）*（14993.83-10000））*1.0*0.8
    5.91*5.02^2+141*5.02

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