1. Qhov ceev ntawm txoj kev taug ko taw: 24 km / teev, nrog rau kev ncig-mus nrug deb li 24 km ua piv txwv.
2. Lub sijhawm thauj khoom ntawm cov pob zeb ua kev tov khoom: 1/6 teev / tsheb rau HZS120 tshuab, 7/30 / teev rau HZS90 tshuab.
3. Tsis siv sijhawm lub sijhawm ntawm cov pob zeb ua kev tov khoom: 5 feeb.
4. Nws siv sijhawm 1.25 teev rau HZS120 tshuab thiab 1.32 teev rau HZS90 tshuab kom ua tiav ib lub tsheb ntawm kev thauj khoom pob zeb.
5. Cov naj npawb ntawm cov tsheb uas tuaj yeem thauj mus rau 6 teev: HZS120 tshuab 6 × 1 / 1.25≈5 (tsheb), HZS90 tshuab 6 × 1 / 1.32≈4 (tsheb).
6. Txhawm rau kom ua tiav cov nqaj ntawm 320 m3 pob zeb ua pob zeb ua 6 teev, cov tsheb yuav tsum tau thauj: 320 × 1 / 6.5≈50 (tsheb).