1. cov khoom siv shrapnel
2. khoom siv dav dav hlau
Cov kev kho qhov nruab deg ntawm 3. qhov chaw seem
Tsis tas li ntawd, qhov tsim ntawm qhov tseem ceeb ntawm qhov hloov qhov tseem ceeb kuj muaj kev zoo kawg thiab, nrog rau kev pab cuam lub neej ntawm qhov hloov, kev khiav haujlwm, kev ruaj ntseg ntawm tus tes hloov qhov thiab kev tshem tawm.
Taws kov tau muab faib ua ke: plug-in kov hloov, patch yam lub teeb kov hloov, plua plav thaiv dej tsis pauv, hloov ciav vias me me (sab hom thiab ntsug), vaub kib hom teeb kov (sab hom, ntsug) thiab ntau lwm cov ntawv. Lub teeb kov hloov tau peb hom ntim: ntau ntau qhov tseeb ntsaws, hauv cov ntawv SMT, thiab DIP plug-in kab xev.