2022年1五年级奥数题小数的巧算 .pdf
vip 会员免费一 小数的巧算(A)年级班姓名得分一、填空题 1计算 1.135+3.346+5.557+7.768+9.979=_.2.计算 1.996+19.97+199.8=_.3.计算 9.8+99.8+999.8+9999.8+99999.8=_.4.计算 6.11+9.22+8.33+7.44+5.55+4.56+3.67+2.78 +1.89=_.5.计算 1.1+3.3+5.5+7.7+9.9+11.11+13.13+15.15+17.17+19.19=_.6.计算 2.894.68+4.686.11+4.68=_.7.计算 17.4837-17.4819+17.4882=_.8.计算 1.250.322.5=_.9.计算 754.7+15.925=_.10.计算 28.6767+32 286.7+573.40.05=_.二、解答题 11.计算 172.46.2+27240.38 12.计算 0.00 01810.00 011 963个 0 1028个 0 13.计算 12.34+23.45+34.56+45.67+56.78+67.89+78.91+89.12+91.23 14.下面有两个小数:a=0.000105 b=0.00019 1994个 0 1996个 0 求 a+b,a-b,ab,ab.答案 1.27.785 2.221.766 原式=(2-0.004)+(20-0.03)+(200-0.2)=222-(0.004+0.03+0.2)=221.766 vip 会员免费 3.111109 提示:仿上题.4.49.55 5.103.25 原式=1.1(1+3+9)+1.01(11+13+19)=1.125+1.0175=103.25 6.46.8 7.1748 原式=17.4837-17.48 19+17.4882=17.48(37-19+82)=17.48100=1748 8.1 原式=(1.250.8)(0.42.5)=11=1 9.750 原式=75 4.7+5.3(325)=75(4.7+5.3)=75 10=750 10.2867 原式=28.6767+32 28.67+28.67(200.05)=28.67(67+32+1)=28.67100=2867 11.原式=172.46.2+(1724+1000)0.38 =172.46.2+17240.38+10000.38 =172.46.2+172.43.8+380 =172.4(6.2+3.8)+380 =172.410+380 =1724+380 =2104 12.181是三位,11 是两位,相乘后 181 11=1991是四位,三位加两位是五文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3vip 会员免费位,因此 1991 前面还要添一个 0,又 963+1028=1991,所以0.000181 0.00011=0.0001991 963个 0 1028个 0 1992 个 0 13.9个加数中,十位、个位、十分位、百分位的数都是19,所以原式=11.11(1+2+9)=11.1145 =499.95 14.a 是小数点后有(1994+3-1=)1996 位的小数,b 是小数点后有(1996+2-1=)1997 位小数.a+b=0.0001069 a-b=0.0001031 1994个 0 1994个 0 a b=0.0001995 ab=1050 19=19555 3990个 0 二 小数的巧算(B)一、填空题 1.计算 4.75-9.64+8.25-1.36=_.2.计算 3.71-2.74+4.7+5.29-0.26+6.3=_.3.计算(5.25+0.125+5.75)8=_.4.计算 34.58.23-34.5+2.7734.5=_.5.计算 6.250.16+2640.0625+5.26.25+0.62520=_.6.计算 0.035935+0.035+30.035+0.0761 0.5=_.7.计算 19.9837-199.81.9+19980.82=_.8.计算 13.59.9+6.510.1=_.9.计算 0.1250.250.564=_.10.计算 11.843-8600.09=_.二、解答题11计算 32.14+64.280.53780.25+0.537864.280.75-864.280.1250.5378.12.计算 0.888125 73+999 3.文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3vip 会员免费13.计算 1998+199.8+19.98+1.998.14.下面有两个小数:a=0.000125 b=0.0008 1996个 0 2000个 0 试求 a+b,a-b,ab,ab.答案1.2 原式=(4.75+8.25)-(9.64+1.36)=13-11=2 2.17 原式=(3.71+5.29)+(4.7+6.3)-(2.74+0.26)=9+11-3=17 3.89 原式=(5.25+5.75+0.125)8=(11+0.125)8=11 8+0.1258=88+1=89 4.345 原式=34.5(8.23+2.77-1)=34.510=345 5.62.5 原式=6.250.16+2.646.25+5.26.25+6.252=6.25(0.16+2.64+5.2+2)=6.2510=62.5 6.35 7.1998 8.199.3 原式=13.5(10-0.1)+6.5(10+0.1)=13.510-13.50.1+6.510+6.50.1=135-1.35+65+0.65=(135+65)-(1.35-0.65)=200-0.7=199.3 9.1 原式=0.1250.250.5(84 2)=(0.1258)(0.254)(0.52)=11 1=1 10.430 原式=11.843-43200.09=11.843-431.8=43(11.8-1.8)=4310=430 文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3vip 会员免费11.原式=32.14+64.280.5378(0.25+0.75-80.125)=32.14+64.280.53780=32.14 12.原式=0.111(8125)73+111(93)=11173+111 27=111(73+27)=111100=11100 13.原式=(2000-2)+(200-0.2)+(20-0.02)+(2-0.002)=2222-2.222 =2222-(10-7.778)=2222-10+7.778=2219.778 14.a+b,a 的小数点后面有 1998位,b 的小数点后面有 2000 位,小数加法要求数位对齐,然后按整数的加法法则计算,所以a+b=0.00012508=0.00 012508 2000位 1996个 0 ba,方法与 a+b 一样,数位对齐,还要注意退位和补零,因为a=0.000125,b=0.0008,由 12500-8=12492,所以1998位 2000位a-b=0.0012492=0.00012492 2000位 1996 个 0 a b,ab 的小数点后面应该有1998+2000位,但 125 8=1000,所以a b=0.0001000=0.00 01 1998+2000位 3995 个 0 ab,将 a、b 同时扩大 1000 倍,得 2000个 0 a b=12500 8=1562.5文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3文档编码:CJ5F10H7B8U4 HO6J2J8N4I6 ZA7L5O5N9W3