}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)?
Ŀ Դ }ͣ
}ĿͬW(xu)?yu)ˡ̽wյğc|(zh)NP(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
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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)ˮœ300m̎r(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\(yn)lWƬӋ(j)㣬҂Q\(yn)(dng)}Ҫ
1DO^ĔzlWƬC(j)ÿعһɴ˿ДO\(yn)(dng)_____x١׃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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}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)ͬļٺͼҽٵweքe52.5cm396.5cm3tмٵ|(zh)ҽٵ|(zh)֮Ȟ
A. 2:1 B. 3:1 C. 4:1 D. 5:1
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}Ŀ̽늴FĴԏ(qing)ЩP(gun)СͬW(xu)(Ϳн^Č(do))ڴF@Ƴɺε늴FD錍(sh)(yn)^쵽ķNr
(1)(dng)_P(gun)]ϺՈ?jin)ڼDИ(bio)wNO_________
(2)^D____________֪є(sh)ͬr(sh)ԽԽ(qing)
(3)ɈD______֪(dng)һr(sh)є(sh)ԽԽ(qing)
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