Lub hnab ntim plaub lub hnab ntim kuj yog ib lub hnab ntim khoom siv rau feem ntau, yog li cas nws yog yam ntxwv?
A. Lub hnab ntim plaub lub hnab ntim muaj qhov zoo ntawm peb sab, thiab cov khoom noj yog tshiab thiab siv tau ntau zaus.
B. Lub hnab plaub khoob seeb zoo tuaj yeem ua kom tsis txhob muaj kev poob siab, kev luam ntawv tshiab, kev tsim qauv qauv thiab kev tsim khoom, thiab tsim tau cov cim tshwj xeeb lossis qauv ua si zoo.
C. Nws tuaj yeem hais txog cov khoom txig ntawm cov khoom khib nyiab siab thiab txav sib txawv.
D. Tus qauv yog nplua nuj, thiab nws tsis ua hauj lwm rau kev ua noj, noo noo, nqus tsev, zoo oxygen permeability, siab sealing kev ua tau zoo thiab kev sib tw ua kom zoo zoo.
E. Kev tiv thaiv kom tsis txhob muaj teeb meem, tiv thaiv sab nraud, tshwj xeeb tshaj yog tiv thaiv kev tiv thaiv thiab lwm yam khoom tiv thaiv zoo los ntawm kev cuam tshuam ntawm lub chaw sab nrauv, thiab ntxiv lub neej txee.
