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        1. Ӣҽ̾W(wng) > > }ĿԔ

          }ĿW(xu)ƼСMͬW(xu)һ(g)λСС늟ጚDʾR1R2ǰl(f)Դ늉36 V׃

          (1)(dng)S1]S2ar(sh)М?f)늟ጚĹʞ?/span>18 WR1ֵǶ?

          (2)(dng)S1]S2br(sh)ߜ?f)늟ጚĹʞ?/span>45 W·еĿR2ֵǶ?

          (3)늟ጚڵ͜?f)r(sh)_P(gun)S1S2̎ʲôB(ti)?

          𰸡(1) 72 (2)48 (3)(dng)늟ጚڵ͜?f)r(sh)R1cR2(yng)“(lin)Դ˕r(sh)_P(gun)S1_S2a

          (1)Мؙnr(sh),R2·,P118WU36VR172(2)ߜؙnr(sh),R1R2“(lin)P245WI1.25AI1 0.5AI2II11.25A0.5A0.75AR248(3)늟ጚڵؙ͜nr(sh)R1cR2(yng)“(lin)˕r(sh)_P(gun)S1_S2a..

          (x)ϵд
          P(gun)(x)}

          Ŀ Դ

          }ĿͬW(xu)?yu)ˡ̽wյğc|(zh)NP(gun)ϵDʾČ(sh)(yn)bM(jn)Ќ(sh)(yn)ӛ䛔(sh)(j)±ʾՈ(j)еĔ(sh)(j)شІ}

          1(sh)(yn)Ҫڼ҃ɂ(g)ͬğзքeͬ|(zh)ˮʳͣ߀(yng)xɂ(g)ȫͬ늼ӟxͬ늼ӟĿǞ__________

          Aͬr(sh)g(ni)ɂ(g)늼ӟˮʳͷųğͬ

          Bͬr(sh)g(ni)ʹˮʳߵĜضͬ

          2DǸ(j)(sh)(yn)(sh)(j)ĈDЈDٱʾ__________r

          鿴𰸺ͽ>>

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          }ĿDʾķNF(xin)УڹֱF(xin)

          A. ͸^¶鿴~}

          B.

          C. ʳ

          D. ϵĺט

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          }Ŀ|韵ɳȺu҇I(lng)ԓĺN(yn)SʯͺȻYԴ_______Դ(򡰲)___________һNh(hun)Ɖ^СԴ(du)ڿ̽ɳijغ׵|(zh)(gu)r(sh)ʹһNo˝ˮœˮœں„^ܵĺˮ_____(׃󡱡׃С򡰲׃)(dng)ˮœ300m̎r(sh)ͣںϹĸl(f)һ(g)•̖____sĸ(hu)յ@(g)̖(O(sh)•ںˮеĂٶȞ1500m/s)ˮœڴܵĺˮ(qing)s___________Pa(O(sh)ˮܶȞ1.0103kg/m3(sh)gȡ10N/kg)

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          }Ŀһ^ˮķvČ(sh)(yn)n傀(g)(sh)(yn)СMքe(bo)ÜضȜyõķˮĜض(sh)(j)±ʾf_

          A. 傀(g)СMČ(sh)(yn)ʧ?yn)ˮķc(din)100

          B. ֻе2MĔ(sh)(j)ԽܣĽMČ(sh)(yn)ʧ

          C. ֻе34MĔ(sh)(j)ԽMČ(sh)(yn)ʧ

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

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          Ŀ Դ

          }Ŀ\(yn)lWƬӋ(j)㣬҂Q\(yn)(dng)}Ҫ

          1DO^ĔzlWƬC(j)ÿعһɴ˿ДO\(yn)(dng)_____x١׃١\(yn)(dng)_____

          2Dʾabɂ(g)Fքeͬһ߶oֹጷQֱu鱳(dng)M(jn)Qֱuą^(q)r(sh)C(j)ͨ^ÿ0.2sعһεķӛ䛼F\(yn)(dng)^̡aFٶȞ1m/stÿKuĸ߶Ȟ_____mbٶȞ_____m/s

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          Ŀ Դ

          }ĿСDʾb̽Ҏ(gu)y±ʾăɽM(sh)(j)

          һĿ՚бˮ

          ˮб՚

          1һ(g)(sh)(j)ړסՈCϷɂ(g)еĔ(sh)(j)Д@(g)(sh)(j)(yng)ԓǣ_____Д(j)ǣ_____

          2С̽Ŀ՚бˮc(din)r(sh)˵4Ό(sh)(yn)30㣬ǿ__

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

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          }ĿF(xin)һ(g)ɼס҃ɷNɵ,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

          }Ŀ̽늴FĴԏ(qing)ЩP(gun)СͬW(xu)(Ϳн^Č(do))ڴF@Ƴɺε늴FˆD錍(sh)(yn)^쵽ķNr

          (1)(dng)_P(gun)]ϺՈ?jin)ڼ׈DИ(bio)wNO_________

          (2)^D____________֪є(sh)ͬr(sh)ԽԽ(qing)

          (3)ɈD______֪(dng)һr(sh)є(sh)ԽԽ(qing)

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          ͬ(x)Դ