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11.23340/4S=1/2vt5(1):(2):6(1)(2)(3)720Hz20000Hz20000Hz20Hz8B91.,2.():10100010010012(1)(2)(3)35420.14.(1)(2)(3)(4)5.6.7..8.9.10.311.(12.ADABBCCDDGDEEFFG13.14.15.()16.(1)(2)(3)17.18.19.1.2.341.423108/3108/3456(1)(2)3(4)7(1)(2)8(1)(u2f)(fv2f)(2)(fu2f),(v2f)5(3)uf,6(1).(2)(3)(4)()(5)(6)(7)(8)7891012m10.7531=1000=1031=0.1=10-11=0.01=10-21=0.001=10-31=1061=10-64(1).6(2).(3).(4).56(1).(2):(a)(b)(3)(a)(b)?(c)(4):7.8.().9.10.11.12.s=vt//1/=3.6/13.14.7;15.16.1(m)2:1=103=106=1093,,45(1)(2)(3)(4)6(1)(2)(3)7.mV/3(/3)1/3=1000/3mV389=1.0103/310(1)mV(2)m=V(3)1181123234.5.18971919193219616.7.8.1509.()10.()12()34()N1567(1)9(2)(3)(4)689(1)(2)(3)1011.G=mggg=9.8/g=10/1213141516(1)(2)(3)(4)510123P=F/Sp1=1/2FS24:(1)SF;(2)FS(3)FS56(1)(2)(3)(4)7*/3g=9.8/h89101112137601=760=1.013105=10.341415.1211(1)FG(2)FG(3)F=G(1)FG(2)FG(3)F=G3456(1)F=GF(GF)(2)F=F-F(3)(4)F=G()7(1)(2)(3)1()23124512(1)(o)(2)(F1)(3)(F2)(4)L1(5)L23:=.F1L1=F2L24(1)L1L2,F1F2(2)L1L2,F1F2(3)L1=L2,F1=F256,.()7,,1132(W)(F)(s)=3.W=FsWFs(1=1).45FL=Gh6P/W=7(P)(t)(W)PWt1=1/1=1000123456789=+10.111214345678Q9c11011/()12C=4.2103/()14.210313Q=cm(t-t0)=cmtQc/()mt0tQ=cm(t0-t)=cmt1q1/2Q=qmQq/m3415122561.2.3.4.5.6.7.(1)(2)(3)8.9.10.1()2I(A)(mA)(A)1=103=1063+-400.6160.02030.11(U):2U(V)(KV)(mV)(V)1=103=106=1093+-4030.10150.5511.512220363801(R)()2(R)()(M)(K)1=1031=10334()(1)17502A502AABC(2)12I=U/RI(A)U(V)R()1=1/3IURIUR4,R=U/II=U/RU=IR5R1R2I=I1=I2U=U1+U2R=R1+R2nR=nRI1I2=116R1R2I=I1+I2U=U1=U2n1/R=1/R1+1/R218I1I2=1/R11/R2U1U2=111W21=1=3.610634W=UItW(J)U(V)I(A)t5W=UItW.U.It6.W=I2RtW=PtW=UQQ7.P()8.P(w)WtUVIA9WtPWtP10P=I2RP=U2/R11U012P013U14PUU0PP0UU0PP0U=U0P=P01/4220V100W22010011019251516Q=I2RtQI(A)R()t17()()W=QQ122203456123NS2045678910(1112N13(N)14151617182119.20.21.22.23.24.25.26.272812345226Am.Ts.fHz.m.7v?.v=——=?fT89X1011121.232345678=100.tsv=vts=vst=G=mgF=F1+F2[]F=F1-F2[vm/skm/hsmkmtshGNmkggg=9.8N/kgg=10N/kg1m==10dm=102cm=103mm1h=60min=3600s1min=60s24]Vm=rF=G–FF=G=mgF=gVF=Gp=SFp=ghpPaN/m2kg/m3hmg=9.8N/kgg=10N/kg1cm2=10--4m21mm2=10--6m2Skg/m3g/cm3mkggVm3cm31kg=103g1g/cm3=1×103kg/m31m3=106cm31L=1dm31mL=1cm3FNGNFNpPaN/m2FNSm2FNkg/m3Vm3g=9.8N/kgg=10N/kgFNGN[]GNmkg25p1=p22211SFSF=2121SSFF=F1L1=F2L21221LLFF=F=n1Gs=nhn=1F=Gs=hn=2F=21Gs=2hW=FsL1L2F1NL1mF2NL2mFNGNG=GnsmhmnWJFNsmW=Gh26P=t=h×100%Q=cmtt0Q=mqtQI=RUI=W=UItQJcJ/(kg·)mkgtQJmkgqJ/kgQ=VqPWWJts1W=1J/s1=735W1kW=103W1MW=106WWJWJ1W=Gh[]W=Fs[]W=Pt[]t2t1t=t2-t1t2t1t=t1-t2IAQCtsIAUVR1sWJUVIAts(1)IUt(2)1=1kWh=3.6×106J(3)IURIUR27W=UItUIRW=I2RtW=UItIU/RW=RU2tQ=WP=W/tP=IUI=I1=I2U=U1+U22121RRUU=2121RRPP=I=I1+I21221RRII=U=U1=U2PWkWWJkWhtshPWIAUVP=RU2P=I2R281221RRPP=