Cov txheej txheem:

Qhov dav ntawm chav kawm yog dab tsi?
Qhov dav ntawm chav kawm yog dab tsi?

Video: Qhov dav ntawm chav kawm yog dab tsi?

Video: Qhov dav ntawm chav kawm yog dab tsi?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Kaum ib hlis
Anonim

Cov chav kawm dav yog qhov txawv ntawm sab sauv lossis qis chav kawm txwv kev sib law liag chav kawm . Tag nrho chav kawm yuav tsum muaj tib yam chav kawm dav . Hauv qhov no, chav kawm dav sib npaug rau qhov sib txawv ntawm qhov txwv qis ntawm thawj ob chav kawm.

Ib yam li ntawd, nws tau nug, koj yuav pom qhov dav ntawm chav kawm li cas?

Txhawm rau nrhiav qhov dav:

  1. Xam qhov ntau ntawm tag nrho cov ntaub ntawv teev tseg los ntawm kev rho tawm qhov qis tshaj ntawm qhov siab tshaj plaws,
  2. Muab faib los ntawm cov chav kawm.
  3. Hloov tus lej no nce (feem ntau, mus rau tus lej ze tshaj plaws).

Tsis tas li ntawd, qhov dav hauv kev faib tawm zaus yog dab tsi? Class dav ” yog qhov kev ncua deb ntawm cov kev txwv qis ntawm cov chav kawm sib law liag. Qhov ntau yog qhov sib txawv ntawm qhov siab tshaj plaws thiab qhov tsawg kawg nkaus cov ntaub ntawv nkag. Cov kauj ruam rau kev tsim a kev faib tawm zaus los ntawm ib daim ntawv teev.

Kuj Paub, qhov luaj li cas ntawm chav kawm ib ntus?

Nyob rau hauv inclusive form, chav kawm txwv tau los ntawm rho tawm 0.5 los ntawm qis limitand ntxiv 0.5 mus rau sab sauv txwv. Yog li, chav kawm txwv 10-20 chav kawm ncua hauv daim ntawv suav nrog yog 9.5 - 20.5. Chav kawm loj : Qhov sib txawv ntawm qhov tseeb qhov txwv thiab qhov tseeb qis qis ntawm a chav kawm ncua yog hu ua chav kawm loj.

Qhov dav ntawm chav kawm ib ntus yog dab tsi?

Qhov kev txwv qis dua rau txhua tus chav kawm yog tus nqi tsawg tshaj plaws hauv qhov ntawd chav kawm . Ntawm qhov tod tes, lub siab txwv rau txhua tus chav kawm yog tus nqi loj tshaj hauv qhov ntawd chav kawm . Cov chav kawm dav yog qhov txawv ntawm sab sauv lossis qis chav kawm txwv kev sib law liag chav kawm . Tag nrho chav kawm yuav tsum muaj tib yam chav kawm dav.

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