TXOJ CAI
1. Tsawg tsis ua hauj lwm tus nqi. Yuav luag ntshiab txhua yam qauv.
2. Kev nyab xeeb siv. Yuav tsis muaj kev phom sij ntawm kev tawg ntawm lub elevator hlau hlua zoo tib yam.
3. Yooj yim hydraulic elevator yooj yim rau nruab, qauv yooj yim. Tsis xav tau chav computer tshwj xeeb.
4. Muaj peev xwm loj. Thiab cov load tuaj yeem tsim raws li cov neeg siv khoom xav tau.
5. Kev ua haujlwm du. Vim yog siv hydraulic lifting, qhov nce thiab poob yog maj mam. Sib npaug qhovntsej thiaj tsis mob txawm tias thaum lub zog tsis ua haujlwm.
6. Yooj yim hydraulic freight of elevator muaj tus nqi qis, lub cev muaj zog me me, thiab tsis muaj hluav taws xob thaum poob.
7. Kev saib xyuas yooj yim thiab tus nqi tu qis.
