2014-2015学年度北师大版四年级数学上册期末测试卷(word文档良心出品).pdf

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1、郭家腰小学四年级1 2014 2015 学年度第一学期四年数学期末质量测试卷（时间：80 分钟满分：100 分）一、准确填空。（第 1 题 4 分，第 7 题 3 分，其它每题 2 分，共 21 分。）1、一个八位数最高位上是8，最低位上是 1，万位上是 6，其余各位上都是0，这个数是（）读作（）2、和 999999 相邻的两个数是（）和（）。3、你所在班级的面积是（）平方米，大约（）间教室是 10000 平方米。4、A 21=20（），在括号里最大能填（），这个被除数最大是（）。5、在括号里填上适当的数或单位。428000（）万74990 7（）5600000000=（）亿129533000

2、0（）亿6、下面各数你是怎样估算的？一瓶饮料重 485 克，大约是（）克。某足球场可以容纳观众20498 人，大约是（）人。7、明明向东走 50 米记作+50，那么他向西走 40 米记作（）。如果明明从 0 点处出发，先向东走 30 米，再向西走 50 米，这时明明的位置是（）。8、在里填上“、或”。57003 570030 98920 98902 30000 3 万5 5 0 8 13239、观察下列算式，找出规律并填空。（4334）（34）11（6776）（67）11（73）（）11（）（）11 10、求角的度数。（如右图）1=45 2=()度 3=()度 4=()度 5=()度二、精挑细

3、选。（把正确答案序号填在括号内，每小题2 分，共 10 分。）1、下面的数，（）一个零也不读。A、30407000 B、30047000 C、34007000 D、34000070 2、下面的数，（）是精确数。A、神舟六号载人飞船绕地球飞行约80 圈。B、我们班有 56 人。C、笑笑每天睡眠时间约9 小时。D、我国约有人口 1300000000人。3、下午 5 时整，钟面上时针与分针所成的角是()。A.直角B.钝角C.锐角D.平角4、若 A40=360，则 A 4=（）。学校：班级：姓名：密封线内不准答卷郭家腰小学四年级2 A、3600 B、360 C、36 5、小红给客人沏茶，接水 1 分钟

4、，烧水 6 分钟，洗茶杯 2 分钟，拿茶叶 1 分钟，沏茶 1 分钟。小红合理安排以上事情，最少要（）分钟使客人尽快喝茶。A、7 分钟B、8 分钟C、9 分钟三、明判是非。（对的打“”，错的打“”，每小题 1 分，共 6 分。）1、32 58 30 60=1800。（）2、一个五位数，四舍五入后约等于6 万，这个数最大是59999。（）3、象 0、1、2、3 这样的数都是负数。（）4、三位数乘两位数的积一定是四位数。（）5、一个角的两边越长，这个角就越大。（）6、a(bc)=a bac（）四、细心计算。（共 29 分）1、口算。（每题 1 分，共 8 分）400 50=2730=631-198

5、=125 5 8=33+67=720 90=90 40=185+4=2、竖式计算。（每题 2 分，共 6 分。）280 27=858 39=233 34=验算：3、用你喜欢的方法计算。（每题 3 分，共 15 分。）25 125 4(105 12635)25 38101 文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码

6、:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2

7、F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码

8、:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2

9、F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码

10、:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2

11、F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3郭家腰小学四年级3 27(263 37)50 34 72+34 28 五、完美作图。（共

12、 5 分）1、画出 750、1350的角各一个。（2 分）2、过 A 点画出已知直线的平行线和垂线。（3 分）A 六、列式计算（6分）270与 450的和除以 12，得出的商再乘 3，积是多少？98与 100的和乘以它们的差是多少？七、活用知识，解决问题。（共 24 分）1、体育用品商店每个足球售价58 元，李老师带了500 元，买9 个足球够吗？李 老师最多可以买 几个足球？还剩多少元？（5 分）2、王大叔从西村到东村，每分走60 米。西村东村2400米学校：班级：姓名：密封线内不准答卷文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A

13、1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W

14、7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A

15、1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W

16、7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A

17、1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W

18、7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A

19、1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3郭家腰小学四年级4（1）出发 10 分钟后，他大约在什么位置？（用在图上作标记）（2 分）（2）王大叔 9:15 分出发，到达东村时是什么时间？（3 分）3、学校开展节约用水活动，前3 个月共节约用水 435 吨。照这样计算，学校一年能节约用水多少吨？（4 分）4、小客车限乘 14 人，大客车限乘46 人，如果两种车各开来12 辆，刚好让学校同学全部坐下，那么这个学校共有多少学生？（5 分）5、足球 29 元，篮球 44 元，排球 32 元，乒乓球拍 12 元一

20、个。老师拿 280 元，只买足球，最多买几个？（2 分）如果买 2 个篮球后再全部买排球，可以买几个？（3 分）文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码

21、:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2

22、F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码

23、:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2

24、F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码

25、:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2

26、F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3郭家腰小学四年级5 参考答案一、填空1、80060001 八千零六万零一2、999998 1000000 3、50020750 4、20 168 5、4 万7 万56 亿13 亿6、平移旋转7、-40 西8、，=，.。9、相交平行10、45 度，1

27、35 度，45 度，90 度。二、精挑细选1、C 2、B 3、B 4、C 5、B 三、明辨是非1、2、3、4、5、6、四、细心计算略五、完美作图1、2、略3、（1）东北60 度200 米（2）西南25 度250 米4、略六、活用知识解决问题1、（1）二季度三季度。（2）10。（3）答案在 41 到 55 之间可选。2、（1）略（2）9:55 分3、1740（吨）答：4、720（人）答：5、（1）9 个 19 元 答：（2）6 个答：文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档

28、编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6

29、V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档

30、编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6

31、V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档

32、编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6

33、V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3文档编码:CL1Q6B4A1F3 HC4M6V2F1A3 ZD9W7E7I2R3