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        1. Ӣҽ̾W(wng) > > }ĿԔ

          }ĿW(xu)ƼСMͬW(xu)һλСС늟ጚDʾR1R2ǰl(f)Դ늉36 V׃

          (1)(dng)S1S2arМؓ늟ጚĹʞ18 WR1ֵǶ?

          (2)(dng)S1]S2brߜؓ늟ጚĹʞ45 W·еĿR2ֵǶ?

          (3)늟ጚڵؓ͜r_P(gun)S1S2̎ʲôB(ti)?

          𰸡(1) 72 (2)48 (3)(dng)늟ጚڵؓ͜rR1cR2(yng)“(lin)Դ˕r_P(gun)S1_S2a

          (1)Мؙnr,R2·,P118WU36VR172(2)ߜؙnr,R1R2“(lin)P245WI1.25AI1 0.5AI2II11.25A0.5A0.75AR248(3)늟ጚڵؙ͜nrR1cR2(yng)“(lin)˕r_P(gun)S1_S2a..

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          Ŀ Դ

          }ĿͬW(xu)?yu)ˡ̽wյğc|(zh)NP(gun)ϵDʾČbMЌӛ䛔(sh)(j)±ʾՈ(j)еĔ(sh)(j)شІ}

          1УҪڼ҃ɂͬğзքeͬ|(zh)ˮʳͣ߀(yng)xɂȫͬ늼ӟxͬ늼ӟĿǞ__________

          Aͬrg(ni)ɂ늼ӟˮʳͷųğͬ

          Bͬrg(ni)ʹˮʳߵĜضͬ

          2DǸ(j)򞔵(sh)(j)ĈDЈDٱʾ__________r

          鿴𰸺ͽ>>

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          }ĿDʾķNF(xin)ڹֱF(xin)

          A. ͸^¶鿴~}

          B.

          C. ʳ

          D. ϵĺט

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          }Ŀ|韵ɳȺu҇I(lng)ԓĺNSʯͺȻYԴ_______Դ(򡰲)___________һNh(hun)Ɖ^СԴڿ̽ɳijغ׵|(zh)(gu)rʹһNo˝ˮœˮœں„^ܵĺˮ_____(׃󡱡׃С򡰲׃)(dng)ˮœ300m̎rͣںϹĸl(f)һ•̖____sĸյ@̖(O(sh)•ںˮеĂٶȞ1500m/s)ˮœڴܵĺˮs___________Pa(O(sh)ˮܶȞ1.0103kg/m3(sh)gȡ10N/kg)

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          Ŀ Դ

          }Ŀһ^ˮķvČnУ傀СMքeÜضȜyõķˮĜض(sh)(j)±ʾf_

          A. 傀СMČ򞶼ʧˮķc100

          B. ֻе2MĔ(sh)(j)ԽĽMČ򞶼ʧ

          C. ֻе34MĔ(sh)(j)ԽMČ򞶼ʧ

          D. ֻҪ挍yĽY(ji)Ҍ͔(sh)(j)̎^_(sh)(j)Խ

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          Ŀ Դ

          }Ŀ\lWƬӋ҂Q\ӆ}Ҫ

          1DO^ĔzlWƬCÿعһɴ˿ДO\_____x١׃١\_____

          2DʾabɂFքeͬһ߶oֹጷQֱu鱳(dng)MQֱuą^(q)rCͨ^ÿ0.2sعһεķӛ䛼F\^aFٶȞ1m/stÿKuĸ߶Ȟ_____mbٶȞ_____m/s

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          }ĿСDʾb̽Ҏ(gu)y±ʾăɽM(sh)(j)

          һĿ՚бˮ

          ˮб՚

          1һ(sh)(j)ړסՈCϷɂеĔ(sh)(j)Д@(sh)(j)(yng)ԓǣ_____Д(j)ǣ_____

          2С̽Ŀ՚бˮcr˵4Ό򞣬30ǿ__

          A.10 B.20 C.25 D.45

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          Ŀ Դ

          }ĿF(xin)һɼס҃ɷNɵ,ywe61.3cm3,c|(zh)ͬļ׽ٺͼҽٵweքe52.5cm396.5cm3tм׽ٵ|(zh)ҽٵ|(zh)֮Ȟ

          A. 2:1 B. 3:1 C. 4:1 D. 5:1

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          Ŀ Դ

          }Ŀ̽늴FĴԏЩP(gun)СͬW(xu)(Ϳн^Č(do))ڴF@Ƴɺε늴FˆD錍^쵽ķNr

          (1)(dng)_P(gun)]ϺՈڼ׈DИ˳wNO_________

          (2)^D____________֪є(sh)ͬrԽԽ

          (3)ɈD______֪(dng)һrє(sh)ԽԽ

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          ͬ(x)Դ