Kev Ntsuam Xyuas Thiab Kev daws Ntawm Qhov Teeb Meem Ntawm PVC Sab Cawv

1. yooj yim kom tawg:

A.Yog hais tias cov ntaub ntawv raw tsis yog cov yas zoo lossis ua cov yas dhau, qhov qub tuaj yeem txhawb nqa los ntawm kev ntxiv kev tiv thaiv kab mob AIDS, thiab qhov tom kawg tuaj yeem txo qhov kub lossis cov khoom tsim tawm kub thiab extrusion ceev.

B.The cov khoom zoo ntawm cov khoom tsis zoo thiab tsis sib xws. Cov txheej txheem sib xyaw ua ke yuav tsum kuaj xyuas kom txhim kho qhov zoo.

C. Muaj roj nplua nyeem sab nraud tuaj yeem txo nws txoj kev siv.

D.Too ntau cov hmoov calcium lossis cov uas tsis muaj mesh ntau cov calcium hmoov tuaj yeem txo qhov uas muaj cov calcium calcium lossis xaiv cov mesh lossis cov calcium calcium carbonate.

E.Too tsawg los yog ua tsis tau zoo los ntawm tus neeg saib xyuas nruj

2.Qhov sab npoo ntawm lub pob tw yog ntxhib, nrog nodal thiab huab zoo li ripples

A.The tov khoom zoo ntawm cov ntaub ntawv yog qhov tsis zoo thiab tsis xwm yeem. Cov txheej txheem sib xyaw ua ke yuav tsum kuaj xyuas kom txhim kho qhov zoo

B.Head kub yog tsawg. Lub taub hau kub yuav tsum nce ntxiv kom zoo.

C. muaj roj nplua nyeem sab nraud. Tus nqi ntawm cov roj nplua nyeem sab nraud yuav tsum raug txo kom tsawg

D.There muaj precipitates rau sab hauv phab ntsa ntawm kev tuag. Tus tuag yuav tsum muab ntxuav kom huv

E.Iu tsis txaus tuag taus. Cov ntu ntawm cov ntxaij vab tshaus lim thiab lim phaj yuav tsum tau txo thiab qhov nqi extrusion yuav tsum tau nce