1. Kev tiv thaiv ib puag ncig thiab kev txuag hluav taws xob: cov maus taus hluav taws xob siv hluav taws xob los ua lub zog hluav taws xob, uas tsis tsim cov pa tawm, tsis muaj kuab paug ib puag ncig, thiab pab txhim kho huab cua zoo. Lub caij no, hluav taws xob maus taus muaj kev siv hluav taws xob tsawg thiab tuaj yeem txuag hluav taws xob.
2. Tus nqi tu qis: Piv nrog rau cov tsoos combustion engine maus taus, hluav taws xob maus taus muaj nqi qis dua. Cov khoom siv hluav taws xob maus taus yog qhov yooj yim, thiab tus nqi ntawm kev kho thiab tu yog qhov tsawg.
3. Muteness: Lub zog tsav hluav taws xob ntawm lub tsheb maus taus ua suab nrov tsawg thaum lub sijhawm ua haujlwm thiab tsis ua kom muaj suab nrov, uas yog qhov zoo rau kev txo cov suab nrov hauv nroog.
4. Ib qho yooj yim los tuav: Cov maus taus hluav taws xob feem ntau tsis tas yuav hloov cov iav, kuj yooj yim rau kev khiav lag luam, thiab kuj yooj yim rau kev tsav tsheb.