Tons ntawm lub hnab yog siv los ntim. Txhawm rau kom ntseeg tau tias cov khoom tuaj txawv teb chaws thiab xa tawm raug tswj xyuas kom zoo thaum lub sijhawm tag nrho cov txheej txheem ntawm kev thauj khoom, tsis thauj khoom, tuav, thauj thiab khaws cia, cov khoom thauj tau tswj xyuas kom zoo kom cov khoom tuaj yeem mus txog qhov chaw nres tsheb tuaj nyab xeeb thiab tiav. Tom qab ntawd, nyob rau hauv tus txheej txheem ntawm kev thauj khoom, thau tawm, tuav thiab thauj khoom, nws yog qhov tshwm sim Dab tsi yog qhov teeb meem?
(1) Thov dai rau txoj hlua sib tsoo hauv nruab nrab txoj hauj lwm ntawm lub viav vias lossis hlua. Nws tsis yog yuav tsum tau siv txoj kev kos cov kab pheeb ces kaum, tab sis ib leeg-ib txoj kev dai los yog txoj kab sib chaws rub.
(2) Tsis muaj qhov yuav tsum sawv hauv qab ntim tonnage thaum nqa.
(3) Lub viav vias tsis tas yuav rub tawm hauv cov lus qhia rov qab rau ob tog.
(4) Tsis tas yuav txhuam, khuam lossis tsoo lub ntim ntawm lwm yam khoom thaum lub sijhawm ua haujlwm.
(5) Thaum thauj khoom, thauj khoom thiab thau khoom thauj khoom, nqa lub hnab tuj yuav tsum muab tso rau ntsug.
(6) Thaum thauj mus rau hauv chav ua haujlwm ntau lawm, siv lub tais kom ntau li ntau tau los tiv thaiv lub hnab ntim khoom kom tsis txhob nqa thiab tshee thaum thauj.
(7) Thaum khaws cia rau sab nraum zoov, lub hnab ntim yuav tsum muab tso rau ntawm lub chaw khaws khoom, thiab lub ntim khoom yuav tsum tau muab khi kom nruj nrog cov ntaub npog tsis muaj pob tshab.
(8) Kev ntim tsis tas yuav tsum ncaj.
(9) Tom qab siv tas, nqa ib daim ntawv los yog daim ntaub tsis lo kom pom thiab qhwv nws tso rau qhov chaw txias.
