Lub luag hauj lwm dab tsi ua lub teeb blackboard ua si hauv kev kawm teeb pom kev zoo
Hauv cov txheej txheem ntawm kev tsim kho lossis hloov kho tshiab, ntau lub tsev kawm ntawv feem ntau tau qhia los ntawm cov kws tsim teeb pom kev zoo tias ntxiv rau chav kawm teeb pom kev zoo, teeb cov lus dub yuav tsum tau teeb tsa hauv chav kawm. Yog li cov lus nug yog, tsis yog lub blackboard teeb lub chav kawm teeb? Qhov txawv ntawm ob? Yuav ua li cas yog tias tsuas yog teeb tsa chav kawm thiab teeb lub blackboard tsis teeb?
Hauv qhov kev nkag siab, teeb lub rooj ntoo yog hom teeb hauv chav kawm, tab sis thaum nws siv hauv chav teeb pom kev zoo, lub luag haujlwm tseem ceeb ntawm teeb chav kawm yog teeb pom kev rau cov tub ntxhais kawm' duab, kom cov tub ntxhais kawm muaj ib puag ncig nyeem ntawv thiab sau tau zoo. Lub luag haujlwm tseem ceeb ntawm lub teeb blackboard yog txhawm rau teeb pom thaj tsam blackboard, yog li cov kws qhia ntawv tuaj yeem sau rau ntawm daim txiag zeb kom du, kom cov tub ntxhais kawm tuaj yeem pom cov ntawv ntawm daim ntawv dub.
Cov teeb pom kev hauv chav kawm muaj ntau dua hauv chav kawm, nrog cov yam ntxwv hauv qab no: 1. Daim phiaj tiv thaiv qhov muag; 2. Cov zaub siab; 3. Kev tiv thaiv qhov muag tshaj lij; 4. Kev txuag hluav taws xob; 5. Lub neej ntev; 6. Ntsuab thiab kev tiv thaiv ib puag ncig. Cov yam ntxwv no ua tau zoo raws li qhov xav tau ntawm chav teeb pom kev zoo thiab muab cov tub ntxhais kawm ib puag ncig teeb pom kev zoo.
Hauv kev tsim cov teeb pom kev zoo hauv chav kawm, teeb chav kawm yuav tsum tau teeb tsa nyob rau qhov ntev, thiab qhov nrug nruab nrab ntawm lub teeb thiab lub rooj yuav tsum tsis pub tsawg dua 1.7 meters, uas yog hais tias, teeb tsa chav kawm teeb yuav tsum hais txog qhov siab ntawm lub rooj. Qhov siab ntawm cov rooj hauv tsev kawm ntawv theem pib thiab theem nrab feem ntau nyob ib puag ncig 70cm, thiab qhov siab ntawm cov rooj hauv cov tsev kawm qib siab feem ntau nyob ib puag ncig 50cm.
Qhov tsim ntawm lub teeb blackboard txawv ntawm qhov tsim ntawm chav teeb chav kawm. Lub teeb blackboard yuav tsum yog lub teeb tshwj xeeb blackboard nrog asymmetrical muaj zog lub teeb faib cov yam ntxwv. Lub teeb blackboard yuav tsum tau teeb tsa ua ke rau ntawm daim ntawv dub, 0.7m-1.0m sib dhos rau daim txiag ntoo, thiab 0.1m-0.2m sib npaug rau sab saud ntawm daim txiag ntoo. Lub kaum ntse ntse tswj ntawm lub teeb blackboard yuav tsum tau kho kom tsis txhob ncaj qha rau tus kws qhia.
