Koj puas xav tias cov khoom seem txheej txheem yas?

Ib qho tseem ceeb ntawm cov khoom seem txheej rau kev lag luam yog tias lawv tsis tas yuav siv cov kev kho tshwj xeeb li yuav khoom ntoo pallets.

Cov khoom pallets tsis yog khoom siv xws li cov txua los ntawm cov ntawv sau, ntawv, hlau lossis yas yog zam tsis tau cov kev kho mob. Yas pallets tau nyob rau hauv kev lag luam txij li thaum xyoo 1960, txawm li ntawd los, nws tsuas yog nyob rau hauv xyoo tas los hais tias lawv cov chaw rau kev siv cov khoom siv tau muaj kev tshoov siab heev.