5.6二元一次方程与一次函数1课时配套练习专项练习[定.pdf

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1、5.6 二元一次方程与一次函数一、填空题1.方程 2x+y=5 的解有 _个，请写出其中的四组解_，在直角坐标系中分别描出以这些解为坐标的点，它们_一次函数y=52x 的图象上（此空填“在”或“不在”）.2.在一次函数y=52x 的图象上任取一点，它的坐标_方程 2x+y=5(此空填“适合”或“不一定适合”）.3.以方程 2x+y=5 的解为坐标的所有点组成的图象与一次函数_的图象相同.4.一次函数y=74x 和 y=1x 的图象的交点坐标为_，则方程组174yxyx的解为 _.5.方程组5222yxyx的解为 _，则一次函数y=2 2x,y=5 2x 的图象之间_.6.如图，l甲、l乙分别表

2、示甲走路与乙骑自行车（在同一条路上）行走的路程s 与时间 t的关系，观察图象并回答下列问题：（1）乙出发时，与甲相距_千米；（2）走了一段路程后，乙的自行车发生故障，停下来修理，修车的时间为_小时；（3）乙从出发起，经过_小时与甲相遇；（4）甲行走的路程s(千米）与时间t(时）之间的函数关系是_；（5）如果乙的自行车不出现故障，那么乙出发后经过_时与甲相遇，相遇处离乙的出发点 _千米，并在图中标出其相遇点.二、解答题7.用图象法解下列方程组：（1）2212yxxy(2)6323yxyx8.某工厂有甲、乙两条生产线先后投产.在乙生产线投产以前，甲生产线已生产了200吨成品；从乙生产线投产开始，甲

3、、乙两条生产线每天分别生产20 吨和 30 吨成品.（1）分别求出甲、乙两条生产线投产后，总产量y(吨）与从乙开始投产以来所用时间x（天）之间的函数关系式，并求出第几天结束时，甲、乙两条生产线的总产量相同；（2）在如图所示的直角坐标系中，作出上述两个函数在第一象限内的图象；观察图象，分别指出第15 天和第 25 天结束时，哪条生产线的总产量高？9.如图表示一骑自行车者和一骑摩托车者沿相同路线由甲地到乙地行驶过程的函数图象（分别为正比例函数和一次函数）.两地间的距离是80 千米.请你根据图象回答或解决下面的问题：（1）谁出发的较早？早多长时间？谁到达乙地较早？早到多长时间？（2）两人在途中行驶的

4、速度分别是多少？（3）请你分别求出表示自行车和摩托车行驶过程的函数解析式（不要求写出自变量的取值范围）；（4）指出在什么时间段内两车均行驶在途中（不包括端点）；在这一时间段内，请你分别按下列条件列出关于时间x 的方程或不等式（不要化简，也不要求解）：自行车行驶在摩托车前面；自行车与摩托车相遇；自行车行驶在摩托车后面.6.二元一次方程与一次函数一、1.无数个（0，5）（1，3）（2，1）（3，1）在2.适合3.y=5 2x4.(2,1)12yx5.无解平行6.（1）10（2）1（3）2.5（4）s=5t+10(t 0)（5）1 15 7.（1）10yx（2）03yx8.（1）甲：y=20 x+2

5、00,乙：y=30 x20（2）图象略，第15 天结束时，甲生产线的总产量高，第25 天结束时，乙生产线的总产量高.9.（1）自行车出发早3个小时，摩托车到达乙地早3 个小时（2）10 千米/时40 千米/时（3）自行车：y=10 x文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR

6、9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA

7、1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码

8、:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7

9、HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8

10、ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档

11、编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2摩托车：y=40 x120（4

12、）在 3x5 时间段内两车均都行驶在途中，自行车在摩托车前面：10 x 40 x120，相遇：10 x=40 x120，自行车在摩托车后：10 x40 x 120 7.5 三角形内角和定理第 1 课时 三角形内角和定理1.填空：（1）如果三角形的三个内角都相等，那么每一个角的度数等于_（2）在 ABC 中，若 A=65,B=C，则 B=_（3）在 ABC 中，若 C=90,A=30，则 B=_（4）在 ABC 中，若 A B C=12 3，则 A=_，B=_，C=_（5）在下两图中，1、2 与B、C 的关系是 _（6）如图，在 ABC 中，C=ABC=2A，BDAC，垂足为D，则DBC 的度数

13、为 _文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9

14、S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y

15、10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R

16、6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3

17、H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P

18、8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y

19、7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T22.在ABC中，A=50，B、C 的平分线交于 O 点，则 BOC 等于()A65B115C80D503.两条平行线被第三条直线所截，那么一组同旁内角的平分线()A相互重合B互相平行C相互垂直D无法确定相互关系4.如图，ABCD，A=35,C=80,那么E

20、等于()A35B45C55D755.一块大型模板如图，设计要求 BA 与 CD 相交成 30角，DA 与 CB 相交成文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R

21、6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3

22、H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P

23、8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y

24、7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:C

25、K3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR

26、9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T220的角，怎样通过测量 A，B，C，D 的度数，来检查模板是否合格？6.小芳和小白在一起温习三角形内角和定理，小芳灵机一动，想考考小白对知识掌握的

27、程度，她给小白出了一道这样的题目：如图，证明五边形的内角和等于540即：A+B+C+D+E=540文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:

28、CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 H

29、R9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 Z

30、A1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编

31、码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7

32、 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2文档编码:CK3H9S9R1H7 HR9P8Y10I2M8 ZA1Y7R6U9T2