Sechinhu chakakosha chekushongedza pakushongedza, putty powder chinhu chakakosha pakugadzirisa madziro, uye ihwaro hwakanaka hwezvimwe zvekushongedza. Rusvingo runogona kuchengetwa rwakatsetseka uye rwakafanana kuburikidza nekushandisa putty powder, kuitira kuti mapurojekiti ekushongedza emangwana agone kuitwa zviri nani. Putty powder inowanzo umbwa nezvinhu zvepasi, filler, mvura nezvimwe zvinowedzera. Ndeapi mabasa makuru elatex powder inonyungudika zvakare sechinhu chikuru chinowedzera muputty powder:
① Zvinoita kuti dhaka richangobva kusanganiswa rive rakasimba;
A. Kuvandudza kugona kwekuvaka;
B. Kuwedzera kuchengetwa kwemvura kuti mvura iwedzere kunyorova mumuviri;
C. Wedzera kugona kushanda;
D. Dzivisa kutsemuka nekukurumidza.
② Mhedzisiro padhaka rakasimba:
A. Deredza elastic modulus yedhaka uye wedzera kuenderana kwehwaro hwechigadziko;
B. Wedzera kuchinjika uye dzivisa kutsemuka;
C. Kuvandudza kuramba kudonha kwehupfu;
D. Kusanyanya kunyorova mvura kana kuderedza kunyudzwa kwemvura;
E. Wedzera kunamira kune hwaro hwepasi.
Dura risingapindi mvura rinoreva dura resimende rine hunhu hwakanaka hwekudzivirira mvura uye husingapindi mvura mushure mekuomeswa nekugadzirisa chiyero chedura uye kushandisa nzira chaiyo yekuvaka. Dura risingapindi mvura rine hunhu hwakanaka hwekudzivirira mamiriro ekunze, kugara kwenguva refu, kusapinda mvura, kuomarara, kunamira kwakanyanya uye simba rekudzivirira mvura uye kurwisa ngura. Ndeapi mabasa makuru eupfu hwelatex hunonyungudikasechinhu chikuru chinowedzera mudhaka risingapindi mvura:
① Mhedzisiro padhaka richangobva kusanganiswa:
A. Kuvandudza kuvaka
B. Wedzera kuchengetwa kwemvura uye kuvandudza kunyorova kwesimende;
② Mhedzisiro padhaka rakasimba:
A. Deredza elastic modulus yedhaka uye wedzera kuenderana kwehwaro hwechigadziko;
B. Wedzera kuchinjika, dzivisa kutsemuka kana kugona kudzikamisa madziro;
C. Kuvandudza huwandu hwedhaka;
D. Kutya mvura;
E. Wedzera kubatana.
Nguva yekutumira: Kubvumbi-28-2024