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        1. Ӣҽ̾W(wng) > > }ĿԔ

          }ĿijУ СMǰƏSͬW˽⵽ư׾ȰѰl(f)͵ļZʳľƾľƾbҊDʾҪҪ¼ӟ偌Hһ]HcݔͨȻע냦ƹޣеİ׾ƵĶȔ(sh)ܸһ㲻ֱҪcmˮܳPИI(y)Ҏ(gu)£׾ƵȔ(sh)ָ r£ ׾ƾĺ(sh)֪ˮܶȞ ƾܶȞ  ˜ʴ≺ˮķc ƾķc (j)ԇش

          1ԓSa(chn)ÿƿb  İ׾Ƶ|(zh)Ƕǧ

          2ÿƿb  İ׾ƵܶǶǧ/]rwe׃

          𰸡10.461kg2880

          }֪39ȡָ20z϶ȕr100ml׾ƾĺ(sh)39mlt50039ȡ׾оƾweVƾ539ml195ml195cm3ɵãƾ|(zh)飺mƾƾVƾ0.8g/cm3195cm3156gˮ|(zh)飺mˮˮVˮˮ(VVƾ)1g/cm3(500195)cm3305gt׾Ƶ|(zh)飺mmˮ+mƾ305g+156g461g0.461kg(2)}֪60ȡָ20z϶ȕr100ml׾ƾĺ(sh)60mlt50060ȡ׾оƾweVƾ2560ml300ml300cm3ɦɵƾ|(zh)飺mƾ2ƾVƾ20.8g/cm3300cm3240gˮ|(zh)飺mˮ2ˮVˮ2ˮ(V2Vƾ2)1g/cm3(500300)cm3200gt׾Ƶ|(zh)飺m䣽mˮ2+mƾ2200g+240g440g0.44kg׾Ƶwe飺V䣽500ml500cm3׾ƵܶȞ飺ѡ0.88g/cm30.88103kg/m3.

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          Ŀ Դ

          }ĿijdȤСM̽ҺwеwܸСҎ(gu)ɵČDʾČͬһwAu뵽ܶȵҺwͨ^^쏗ɜyӋʾ(sh)׃Ҏ(gu)óһЩYՓ
          1^̖ҡɳóYՓҺwܶͬrw_ҺwweԽwܵĸԽɳóYՓ_Һwweͬrwܸc]ҺwеxP򡰟oP
          2Ɍ֪AwNAw]ҺwܵĸN

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          Ŀ Դ

          }Ŀ҇F·̾һ˂иӷСt͸ĸĸF܇300km/hٶ߅ƽF܉һͨ܇120km/hٶҲСtl(f)F(xin)Լ^ͨ܇õĕrg16sͨ܇酢Сt_____xϡ򡰱Сt酢ͨ܇_____xϡ򡰱񂣬ͨ܇LȞ_____m

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          }ĿС֪u͵ܶСAƽͲŒ򞣺

          1ƽˮƽ_δa ̎l(f)F(xin)ָָڷֶȱP҂ȣҪʹMƽƽĸ xҡ󡱣{(dio)

          2ƽy՟|(zh)17gڟеmuyu͵Ŀ|(zh)DʾеuȫͲu͵weDʾtu͵|(zh) gu͵ܶȞ kg/m3

          3С@Nyuܶȕ xƫ󡱻ƫС

          4СAСČͲˣώfֻƽҲܜyu͵ܶСAӃɂȫͬğmˮOӋŒ򞲽EՈa

          {(dio)ƽƽy՟|(zh)m0

          ڌһ ƽyˮĿ|(zh)m1

          һͬbMuƽyu͵Ŀ|(zh)m2

          ܄tu͵ܶȱ_ʽ= ֪ˮܶȞˮ

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          }ĿСͬWڌWܶȕrһЩ_

          A. ͬ|(zh)ͬB(ti)ܶȴСһDzȵ

          B. ijе|(zh)ȥһֺʣ|(zh)ܶȵĴС׃

          C. ͬN|(zh)MɵČwͬB(ti)r|(zh)cwe

          D. |(zh)ȵČwwe^ĽM|(zh)ܶ^С

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          }Ŀij^ͧ䲿ּg(sh)±gȡ10N/kg

          ƷQ

          XX^ͧ

          ͧ|(zh)

          900kg

          l(f)әCݔ

          45kW

          d˔(sh)

          20

          45km/h


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          2Oÿλ˿͵ƽ|(zh)60kg^ͧMd˿͕rܸǶ٣
          3ԓͧلҰl(f)әC_ݔܵˮǶ
          4ԓͧͣڵϕrc|e12m2  ͧĉǶ

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          }ĿF(xin)֙Co˂SLrg֙CĻ׌ҕ½PڽҕۼCԭD_

          A. [Failed to download image : http://192.168.0.10:8086/QBM/2019/3/26/2169068878733312/2172572408537088/STEM/f80f8449a23b4aaa806fb34821cdb5ba.png] B.

          C. D.

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          }Ŀһ|(zh)20kgwwˮƽϣwe8103m3  ijͨ^DʾĻ݆Qֱ@w g=10N/kg
          1ԓwܶǶ
          2250NKӕrwǡ܄w3mǡõ_Ŀλ^Ĺ
          3ԓ݆ęCеЧǶ

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          }ĿСyʳܶȲE£ƽ{(dio)(ji)ƽ⣻{(dio)ƽ{(dio)ú|(zh)20gĿן(ni)myß͵Ŀ|(zh)39g(ni)͵ͲxͲ(ni)͵we20mltyܶȞ顡________g/cm3 ˷yܶ________С//ڣ挍ܶȣ

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          ͬԴ