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        1. Ӣҽ̾W(wng) > > }ĿԔ

          }ĿijƌW(xu)dȤСMW(xu)(x)ˡֲw(du)ˮաúɢʧ֪R(sh)ʳ}ˮrϺܶӋ(j)(du)ֲ:(x)ˮʧˮԭչ_̽ ϳȥȿƳɡ롱ڡ롱м240gܶȞ1.2g/cm3ʳ}ˮҺзܶӋ(j)(sh)(yn)bDʾͨ^^һΕr(sh)gܶӋ(j)ȵ׃оϵʧˮֵĠrܶӋ(j)ҺнSr(sh)g׃Dʾʳ}ˮҺwwe׃

          1(sh)(yn)^ܶӋ(j)ܵĸ/pС/׃(j)ܶӋ(j)ȵ׃r֪}ˮˮ/ʧˮٶ׃c(din)
          2(j)D(sh)(j)ͨ^Ӌ(j)֪һΕr(sh)g}ˮܶg/cm3

          𰸡
          1׃ʧˮȿ
          21.125
          ⣺1(sh)(yn)^ܶӋ(j)ʼK̎ƯܵĸcܶӋ(j)׃Ը׃ (j)D֪ܶӋ(j)]u׃󣬄tV׃׃F=gV֪׃С}ˮˮԶ}ˮʧˮ
          ɈD֪ܶӋ(j)]ȿ׺׃Զʧˮٶ׃c(din)ȿ׺׃2(j)D(sh)(j)֪_ʼr(sh)]Ȟh1=6cmtF1=G}ˮ1gSh1=G
          һΕr(sh)g]Ȟh2=6.4cmtF2=G}ˮ2gSh2=G
          }ˮ2gSh2=}ˮ1gSh1
          t}ˮܶȣ}ˮ2= }ˮ1= 1.2g/cm3=1.125g/cm3
          Դǣ1׃ʧˮȿ21.125
          c(din)(j)}Ŀ֪lwĸl䑪(yng)õP(gun)֪R(sh)Եõ}ĴҪwĸl]Һwеw FG r(sh)ϸF(xin) = G r(sh)ҸF(xin) G r(sh)³wlđ(yng)e1݆2ˮͧ34wͧ⣨5ܶӋ(j)ܶӋ(j)Ŀ̶Ǐϵ¿̶׃󣬿̶Ȳҿ̶ȟoλ

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          P(gun)(x)}

          Ŀ Դ

          }ĿSˮƽԽԽļͥáˮůM(jn)ȡůDO(sh)ڵذµĹܵ@Nȡůʽßˮڹܵ(ni)ѭh(hun)(dng)ӟ(g)ذ壮ķʽ҃(ni)ůģˮý?yn)ˮ@N|(zh)ԣijgһΕr(sh)g(ni)ѭh(hun)(dng)ˮ|(zh)1000kgM(jn)ˮضȞ55棬ˮضȞ40森@Εr(sh)gˮşJ

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          }ĿVȪˮкwĶNV|(zh)(do)^(qing)ˮԁˮ(jng)^^VõˮV|(zh)^٣(do)^С(j)(do)ͬ@һc(din)O(sh)Ӌ(j)DʾČ(sh)(yn)bãMNͬăɸ(x)LM(ni)bMVȪˮN(ni)bMˮȌεpS_P(gun)Sܵ1t
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          B.(dng)׃ĻƬPƄ(dng)r(sh)늉ʾ(sh)pС
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          }Ŀ(j)ψDr(sh)(yn)Y(ji)
          1ľKLcm
          2ضӋ(j)x(sh)
          3ɜy(c)Ӌ(j)x(sh)N

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          }Ŀ(j)W(xu)֪R(sh)գ
          1ڼͥ·Уͨº(jin)Q٣Д𾀺㾀º(jin)Qڣy(c)·ĵܣ
          2늟_P(gun)_Сtâٷքezy(c)_P(gun)ăɂ(g)Ӿʹһΰl(f)һβl(f)⣮(j)Сt/ܣ_ԓ_P(gun)ڻϣ
          3СtP(gun)]H׌늱乤СtҢڵʾ(sh)늱ƷքeDסʾtH늱죬ڵʾ(sh)׃?yu)?/span> H~ʞ1000W偽·1hСҵĢڱPD(zhun)Ȧ

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          }ĿxЈDД_ǣ

          A.׈DwL 7.30
          B.҈DԴԴO
          C.D_P(gun)]ɟ“(lin)
          D.Dw̕r(sh)g7

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          }ĿDʾ·(dng)׃Ƭ P b ˻(dng)r(sh)t

          A. A1 ʾ(sh)׃A2ʾ(sh)׃С늉 V ʾ(sh)׃
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          }Ŀü(x)ҒСĈDʾλoֹጷԿ՚ôСc(din)Ą(sh)½c(din)Ą(dng)(sh)HϣСڔ[(dng)^(hu)c՚Ħa(chn)[upСKͣôڔ[(dng)^ĦD(zhun)ă(ni)Сc(din)еĄ(sh)ܣڡڡСڡ

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          }Ŀ҂(jng) A(y)(bo)fƄ(dng)ů́؅^(q)՚ǰh֮҇gγһl|ĽꎧՈ(qng)\(yn)W(xu)֪R(sh)ش}

          ůy^ˮʲôһc՚ŕ(hu)

          ɺr(sh)Ҫ(sh)ʩ˹횾߂ʲôӵl(sh)ʩ˹r(sh)߿ՒɱՈ(qng)ɱʲô

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