谁知道塑料的由来?

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/31 04:03:43
xYKoI+{ lIm 2=݋a0^1XE&%RE_GtWdf/%]ʌ_58wpB8=#Z_|~wANQ/IemaglrÔɾű8d ee*3 eG)*t)a1'42D,BKQZxX;Ee:WI+?ǡi/y(|OODV+ʆX |[>Z3juMqPeVnweC-lܗ'Խ]V|'|". iMvZ(Epʦ,-/⃧)yIDX\v0o2={Eөe<(Ө;#]e@Zp;_J]=A8\; R.)w~tkd[26B,UHK=^E]~D$?@EO.\Dc);s!ڄwv9W6j ax1^ oh׿U;?PAVԌz,.©>`({I5%wWY =/QO/I҇MR+]Ӳ*^DqƸ}ϩ,$1+܂Az!d2lE!L`,V!/j⿽?жi6U묥C@a#nfԎhނ]en ɺNTĢ5gƥm뢀d>T2Hc ˕oT .4Hv~ϪC0YQr\X'JvF+A25*U 9pGPaakq:U; *Xа0\5Dt\yW^;Z/x{9#oثCT5Oj:;p)r=c 08o3 8 ?$c1o%;(Gj,,TEͺGʓ1?xbh~/A& ^jp3XXgoǔ<脨inʣk0ń#|BÉ6x<]nfk1K{Zc{_LPCvܧ" pQÓy8} qkFG6K>&Ŀ8 oF3>Uq9 ;XگUJF^{nZ+w uUVٝQ‘3LAvP$Ejfu |eUL=So&J'"iAvwh6,W^7hR1bya1-ɦ>4eإ)PKCdQYQe`PeVu] 8򀟨HaM#~(E6fdDY7=u/eb+ bNOښ=~܇#55c*8 rśzQ[ DVAT}h|z@'PiXyllDXP?^K5_ Ul onjpUȾLgZΎטJ]HwB19 U` @ðB=sۿ8*;X/9֟A }X!`\q-5S@c4]im^ntUެ#ƽj1ջ)'$өEfy=me`eX!Q㫫s"877Fx;O@uwÊ.M#Q18; Ƚj )d|a4 P'5qZΌNYh][Gs!Vո9ޙͣ*y3E% 306㬼w `1.f,3'>Y @eqJ 9" *SlG.nAxJUpEK2w \E'į& DijaB]Q*3zzKOY^<њҲb5`q0W!bR߾i=y|OA[OqP|IhJ2R9m/Lֿf=(۱v}ǷqɎ)xzsK(>-m`\-rzXzR,emޢ4Q%6OuێZ3xi t\mTo`Ulm#iܞ;r= &GxG=P;4Qcs>q)--&p %4!c}k)L^ȢAc+9Rq,m&j a?V!/Tl9Qp<١97H Kub ""DuL BA+4"CbΝuۮ2 )