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          ĿД(sh)W(xu) Դ

          2012•ohģDタmy=ax2+ba0b0cxSc(din)ABc(din)Ac(din)B(c)cySc(din)Cタm@c(din)BD(zhun)180õµĒタnc(din)C1cxSһ(g)c(din)A1߅AC1A1Ctab(yng)MP(gun)ϵʽ飨

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          2012•ohģ13ľ΃(ni)دBطŃɂ(g)cƵСÿ(g)Сεÿl߅cεһl߅ƽУ
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          2012•ohģƽֱ(bio)ϵУɂ(g)ȫȵֱǰOABDCEدBһAOB=60B20̶OAB(dng)DCEM(jn)²
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          2012•ohģ֪κ(sh)y1=ax2+bx+ca0ĈD(jng)^c(din)10-300-
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          ͬ(x)Դ