ࡱ > g R bjbjVV C r< r< / > > 8 " k x# ( # # # # - . . ޚ E p5 , N - p5 p5 # # % 7 7 7 p5 # # ޚ 7 p5 ޚ 7 7 F B v # II 6 . R T ʚ ; 0 k c J6 j c v c v T . -/ 7 / 0 . . . 6 L . . . k p5 p5 p5 p5 c . . . . . . . . . > , j : 2 0 1 2 t^nfؚI{f[!hbuhQV~ NՋ)Y%mwS ty~T irtR ,{`!wS NUSy bk\6 RqQ3 0 R0k\~QvV*N y-NS g N*N y/fcknxv 1 . NRlcknxv/f A . Ǒ(uirtbSf[elSN gHe0W9eS>e\'`CQ }vJSpg B . 1ul\twS"lSP[NoS`Í0RW`eO>eQIQP[ C . Nؚzz[0WbۏLeaDdq_/f)R(u+}Y~o}YvzR D . SP[8h@b+T8hP[USrX[(Wev;`(ϑ\N募SP[8hv(ϑ 2 . YV@b:yё^\hM N $Nz1uI{v{(~~4ls^`cYNzvT Nv S:_x:W-Nh-NN1uM TN v5uAms^ae$N`~NzveT9Y҉GW:NYgN9eSNRg N*NagN҉vv^SS`Q/f A . h-Nv5uAmS'Y҉S'Y B . $N`~I{Sw҉S\ C . ё^\h(ϑS'Y҉S'Y D . xa^:_^S'Y҉S\ 3 . NN 0WtkSf~0WtZP SWhTЏRGPYkSfShTZP SWhTЏRRQ\:NSegv1 / 4 NQkSf(ϑvSSRShMRTkSfv A . T_R^'Y\KNk:N4 : 1 B . ҉^'Y\KNk:N2 : 1 C . hTgKNk:N1 : 8 D . hSJS_KNk:N1 : 2 4 . Ǐ Nt`SShV~T N~vT5uRsP S~Wv5uSU Oc NS5u~v;`5u;:NR 0S_oR~WNS~WvSpek:NK e~_cv5uRs:NP 1 \oR~WNS~WvSpekcؚ0RN k , ~_c5uRs:NP 2 , RP 1 TP 2 / P 1 R+R:N A P R / k U , 1 / n B ( P / k U ) 2 R , 1 / n C . P R / k U , 1 / n 2 D ( P / k U ) 2 R , 1 / n 2 5 . $N*NV[I{ϑ_Sp5uw@bNu5u:WI{RbYV-NZ~@b:y N&^5uv|P[Ng N^NV-NA plV:yeTۏeQ5u:W(W~bQޘL gTy _5u:W|P[SSY5uR\O(uR|P[(W5u:W-N A . ZPv~ЏR5uRHQS\TS'Y B . ZPv~ЏR5uRHQS'YTS\ C . ZPf~ЏR5uRHQS\TS'Y D . ZPf~ЏR5uRHQS'YTS\ N0 N[y bk\6 RqQ1 8 R0k\~Qv4 *N y-N gY*N y/fcknxvhQ [v_6 R [FO NhQv_3 R g b NT{v_0 R 6 0JSWb_stx*j*bbYVA B :Nv_O p:NW_0(W*bbQ ga 0b $N_gUSr SIQNzzlWvNA B DdeQstx $NeQ\p0RO vݍyvI{0$N_gIQ(WJSWLu NS\Tb\v`QYV@b:yRa 0b $N_gIQ A (WTyGW SN(-N Oda IQv Od^'Y B NvTveQ\҉Nzzle\eQ4l-Nb IQvb\҉'Y C a IQgq\gё^\hbSuIQ5uHe^b IQ_N N[ D R+RǏT NSr^mňna IQvvNag~ݍ'Y 7 . lX tckT Odv NR{*jl(Wt = 0 e;Rvlb_YV@b:yM :NN(-Nv N*N(plv Od^:N4 0 m / s Rt = 1 / 4 0 s e A . (pM [s^aMOnvMOy N[:N