Raws li cov khoom siv tseem ceeb hauv kev tsim khoom, kev ua haujlwm ruaj khov ntawm lub elevator yog ncaj qha ntsig txog kev tsim khoom thiab kev nyab xeeb. Txhawm rau ua kom lub sijhawm ntev thiab ua haujlwm tau zoo ntawm lub elevator thiab txuas lub neej ntawm cov khoom siv, kev saib xyuas txhua hnub yog qhov tseem ceeb. Cov hauv qab no yog 5 cov kauj ruam tseem ceeb rau kev tu txhua hnub ntawm lub elevator los pab koj tswj thiab tswj cov cuab yeej zoo.