1. Eco-tus phooj ywg: Cov tsheb kauj vab hluav taws xob khiav ntawm cov roj teeb thiab tsis muaj pa taws lossis cov pa phem, ua rau lawv zoo rau ib puag ncig. Hauv qhov sib piv, roj av- cov tsheb maus taus tso tawm ntau cov pa roj carbon dioxide thiab lwm cov pa phem, ua rau muaj kev puas tsuaj ib puag ncig.
2. Zog-nqi: hluav taws xob maus taus muaj nqi zog; lawv tsuas yog yuav tsum tau them, thiab tus nqi them nqi kuj tsawg. Gasoline maus taus, txawm li cas los xij, yuav tsum tau refueling; cov nqi roj hloov pauv thiab feem ntau nce siab, ua rau siab dua - cov nqi khiav lag luam.
3. Nqis -txuag: Cov tsheb kauj vab hluav taws xob muaj cov nqi kho mob qis dua vim lawv cov qauv siv hluav taws xob yooj yim; lawv tsis tas yuav hloov cov khoom xws li cov roj cav lossis cov lim cua. Hloov pauv, roj av maus taus suav nrog cov nqi saib xyuas ntau dua, vim tias cov khoom siv xws li cov roj cav thiab cov lim cua yuav tsum tau hloov tsis tu ncua, ua rau tag nrho cov nqi ntawm cov tswv cuab.
4. Kev ua haujlwm ntsiag to: hluav taws xob maus taus tsim yuav luag tsis muaj suab nrov thaum caij tsheb, thaum cov roj av maus taus tsim suab nrov, uas tuaj yeem cuam tshuam kev noj qab haus huv ntawm cov neeg caij tsheb thiab cov neeg nyob ze.