}ĿW(xu)У(sh)W(xu)ħIF(tun)F(tun)(zhn)ُ(gu)IABɷNħُ֪(gu)I2(g)ANħ6(g)BNħ130Ԫُ(gu)I1(g)ANħ1(g)BNħ5Ԫ
(1)@ɷNħĆr(ji)
(2)Y(ji)TF(tun)Qُ(gu)IABɷNħ100(g)(ANħ^50(g))p11gij̵ЃɷN(yu)ݻ(dng)DʾՈ(qng)(j)Ϣգُ(gu)IANħ________(g)r(sh)x(dng)һл(dng)ُ(gu)IM(fi)ͬ
𰸡1ANħĆr(ji)20Ԫ/(g)BNħĆr(ji)15Ԫ/(g)245
1O(sh)BNħĆr(ji)xԪ/(g)tANħĆr(ji)飨x+5Ԫ/(g)(j)}г⼴
2O(sh)ُ(gu)Im(g)ANħr(sh)x(dng)һл(dng)ُ(gu)IM(fi)ͬ(j)}ĿеĵP(gun)ϵгʽ⼴.
1O(sh)BNħĆr(ji)xԪ/(g)tANħĆr(ji)飨x+5Ԫ/(g)
(j)}ã2x+5+6x=130
ãx=15
x+5=20
ANħĆr(ji)20Ԫ/(g)BNħĆr(ji)15Ԫ/(g)
2O(sh)ُ(gu)Im(g)ANħr(sh)x(dng)һл(dng)ُ(gu)IM(fi)ͬ
(j)}ã0.820m+0.415100m=20m+15100mm
ãm=45
ُ(gu)IANħ45(g)r(sh)x(dng)һл(dng)ُ(gu)IM(fi)ͬ
ʴ𰸞飺45
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}Ŀ20181017҇(gu)傀(g)ؚ,ijУW(xu)(hu)ɲ(du)W(xu)(do)ؚԸ(dng)M(jn)г{(dio),õһMW(xu)rĔ(sh)(j),(du)W(xu)У־˔(sh)M(jn){(dio)ͷֽMy(tng)Ӌ(j),(sh)(j)DʾĽy(tng)Ӌ(j)D,(DϢ)֪A.BɽM˔(sh)ıȞ1:5.
{(dio)ľ˔(sh)ֽMy(tng)Ӌ(j)
Me | ~x/Ԫ | ˔(sh) |
A | 1x10 | a |
B | 10x20 | 100 |
C | 20x30 | ______ |
D | 30x40 | ______ |
E | 40x | ______ |
Ո(qng)Y(ji)ϢІ}
(1)aֵͅc{(dio)Ŀ?c)˔?sh)
(2)a(b)ȫ{(dio)ľ˔(sh)ֽMy(tng)Ӌ(j)D1Ӌ(j)BĈAĽǶȔ(sh)
(3)֪ԓУЌW(xu)2200Ո(qng)Ӌ(j)(sh)30ԪČW(xu)˔(sh)ж?
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}ĿD֪ABCAB=ACBAC=120ADBCc(din)Dc(din)PBAL(zhng)һc(din)c(din)OǾADһc(din)OP=OC
1APO+DCOĶȔ(sh)
2Cc(din)POCĴֱƽ־ϣ
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}ĿDABC(jng)^һƽƵDFEλՈ(qng)شІ}
(1)c(din)CČ(du)(yng)c(din)c(din)__________D=__________BC=__________
(2)BCEôƽƵķ__________ķƽƵľxǾ__________L(zhng)
(3)BADBFBEcCEȵľ__________.
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}Ŀ呟W(xu)w|(zh)Ӗ(xn)ԽҰܣijУһ@(ni)eжԽҰ(zhn)ِ·DD1ʾc(din)EABCD߅ADc(din)ھABCDĂ(g)c(din)̎жλxɱO(jin)y(c)\(yn)(dng)TԽҰM(jn)̣һλ\(yn)(dng)TPc(din)Bl(f)BED·M(jn)_(d)c(din)DO(sh)\(yn)(dng)TP\(yn)(dng)r(sh)gtO(jin)y(c)c(din)ľxyF(xin)yctĺ(sh)P(gun)ϵĈDD2ʾt@һϢāԴO(jin)y(c)c(din)飨
A.Ac(din)
B.Bc(din)
C.Cc(din)
D.Dc(din)
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