Peb tsis kam txais cov menyuam kawm ntawv ntxiv raws li peb tuaj yeem cob qhia. Yog li, peb tus kws qhia davhlau rau cov tub ntxhais kawm sib piv yog li 1: 4 txog 1: 5, ib tus kws qhia davhlau rau 4-5 cov tub ntxhais kawm davhlau.
Peb tsis kam txais cov menyuam kawm ntawv ntxiv raws li peb tuaj yeem cob qhia. Yog li, peb tus kws qhia davhlau rau cov tub ntxhais kawm sib piv yog li 1: 4 txog 1: 5, ib tus kws qhia davhlau rau 4-5 cov tub ntxhais kawm davhlau.
