Hnav Cov Khoom Siv

• Cov phaj hnav Wodon siv los ua ntau yam khoom siv hnav uas nyuaj rau muab tso rau hauv qhov chaw hnav siab. Peb muaj ntau yam khoom siv los hloov peb cov phaj:
• 12 pawg ntawm cov tshuab txiav plasma, 12 lub tshuab khoov thiab cov tshuab nias, nrog rau lub peev xwm ua haujlwm siab uas ua los ntawm cov engineers thiab cov kws tshaj lij.
• peb tuaj yeem muab cov phaj hnav txiav, khoov, bolting, xuas nrig ntaus thiab vuam raws li cov neeg siv khoom kos duab.