}Ŀ?q)WƼwˇ(ji)g꼉(j)(sh)W(xu)(dng)СM΄(w)ǜy(c)W(xu)УUABĸ?c)Uǰ_(ti)Aϵc(din)C̎y(c)U픶AǞ45Uķߵ_(ti)Aµc(din)F̎y(c)U픶AǞ60֪_(ti)ĸ߶BE1ףc(din)Cĸ߶CD3_(ti)ACF½Ǟ30c(din)EFDͬһlֱUABĸ߶ȣӋ(j)Y(ji)_0.1(sh)(j) 1.41
1.73
𰸡⣺^(gu)c(din)CCMABMt߅MEDCǾ
ME=DC=3CM=ED
RtAEFУAFE=60O(sh)EF=xtAF=2xAE= x
RtFCDCD=3CFD=30
DF=3
RtAMCACM=45㣬
MAC=ACM=45
MA=MC
ED=CM
AM=ED
AM=AEMEED=EF+DF
x3=x+3
x=6+3
AE= 6+3
=6
+9
AB=AEBE=9+6 118.4ף
UABĸ߶ȼs18.4ף
^(gu)c(din)CCMABMt߅MEDCǾO(sh)EF=x(j)AM=DEг̼ɽQ(wn)}
c(din)ͨ^(gu)`\(yn)P(gun)Ǹdž(wn)}ǣҕˮƽϷĽǣҕˮƽ·ĽǼԽ}
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}Ŀһл܇(ch)(jng)^(gu)һlL(zhng)300Ҫ20ĕr(sh)gһKֱ°l(f)ڻ܇(ch)ϵĕr(sh)g10룮@л܇(ch)L(zhng)ȣ
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O(sh)@л܇(ch)L(zhng)xףô
1܇(ch)^(jng)^(gu)µ܇(ch)β(jng)^(gu)܇(ch)ߵ· @Εr(sh)g(ni)܇(ch)ƽٶ /
2܇(ch)^M(jn)܇(ch)βx_(ki)܇(ch)ߵ· @Εr(sh)g(ni)܇(ch)ƽٶ /
3܇(ch)(jng)^(gu)ºͻ܇(ch)ͨ^(gu)ƽٶȵP(gun)ϵ
4ɴ˿г̲@л܇(ch)L(zhng)ȣՈ(qng)з⣩
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1ȥԓr(nng)Ҙ(l)ס(rn)f(wn)Ԫ
2_ްȥIJ(rn)ȫ^m(x)ͶYO(sh)خa(chn)Č(sh)wN(xio)ۺ;W(wng)N(xio)(xing)Ŀڽӛ߲Lr(sh)f(shu)A(y)Ӌ(j)ס(rn)ȥ(hu)10%L(zhng)خa(chn)N(xio)۵(rn)׳ջͶY߀@ò10f(wn)Ԫļ(rn)Ո(qng)(wn)خa(chn)N(xio)жf(wn)Ԫ(rn)
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}Ŀώ˽W(xu)ڼҵxrSC(j){(dio)20W(xu)ijһxСr(sh)(sh)wry(tng)Ӌ(j)£
xr(sh)g | 2 | 2.5 | 3 | 3.5 | 4 |
W(xu)˔(sh) | 1 | 2 | 8 | 6 | 3 |
tP(gun)@20W(xu)xСr(sh)(sh)f(shu)_ǣ
A.(sh)8
B.λ(sh)3
C.ƽ(sh)3
D.0.34
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1CADEաFCE
2DCF=120DE=2BCL(zhng)
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1c(din)C(bio)
2(dng)MCNL(zhng)c߅OMNBL(zhng)ȕr(sh)CML(zhng)
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(1)գa_______b_________.
(2)Ո(qng)(dng)x10r(sh)c
֮gĺ(sh)P(gun)ϵʽ
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1҃ɂ(g)Sÿܼӹټ®a(chn)Ʒ
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