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1、2017年初二数学下册期中试题及答案一、选择题(共 10 小题，每题3 分，共 30 分)1.在ABC中，A=40，B=60，则 C=()A.40 B.80 C.60 D.100 2.以下银行标志中，不是轴对称图形的为()3.已知三角形的两边长分别是4、7，则第三边长a 的取值范围是()A.33 D.a11 4.以下图形中，不是运用三角形的稳定性的是()5.如图，CD AB 于 D，BE AC 于 E，BE与 CD交于 O，OB=OC，则图中全等三角形共有()6.如果分式有意义，则x 的取值范围是()A.全体实数B.x=1 C.x 1 D.x=07.下面分解因式正确的选项是()A.x2+2x+
2、1=x(x+2)+1 B.(x24)x=x3 4x C.ax+bx=(a+b)x D.m22mn+n2=(m+n)2 8.以下计算正确的选项是()A.3mn3n=m B.(2m)3=6m3 C.m8 m4=m2 D.3m2?m=3m39.如图，在 ABC中，B=C，D为 BC边上的一点，E 点在 AC边上，ADE=AED，假设 BAD=20，则CDE=()A.10 B.15 C.20 D.30 10.如图，OC平分AOB，且AOB=60，点P为 OC上任意点，PM OA 于 M，PD OA，交OB于 D，假设 OM=3，则 PD的长为()二、填空题(共 6 小题，每题3 分，共 18 分)11
3、.如图，为了使一扇旧木门不变形，木工师傅在木门的背后加钉了一根木条，这样做的道理是.12.如图，A、C、B、D在同一条直线上，MB=ND，MB ND，要使ABM CDN，还需要添加一个条件为.13.如图，在图1 中，互不重叠的三角形共有4 个，在图，2 中，互不重叠的三角形共有7 个，在图 3中，互不重叠的三角形共有10 个，则在第9 个图形中，互不重叠的三角形共有个.14.如图，四边形ABCD 中，ACB=BAD=90，AB=AD，BC=2，AC=6，四边形 ABCD的面积为.15.正ABC的两条角平分线BD和 CE交于点 I，则BIC 等于.16.如图，等边 ABC的周长是9，D是 AC边
4、上的中点，E在 BC的延长线上.假设 DE=DB，则 CE的长为_.三、解答题(共 8 题，共 72 分)17.(此题 8 分)计算(xy2)3 18.(此题 8 分)因式分解：aba 19.(此题 8 分)计算(1 )20.(此题 8 分)如图，已知 D为ABC边 BC延长线上一点，DF AB 于 F 交 AC于 E，A=35，D=42，求ACD的度数.21.(此题 8 分)如图，点 D、E在ABC的 BC边上，AB=AC，AD=AE.求证：BD=CE.文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1
5、ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文
6、档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1
7、Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W
8、1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H
9、2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2
10、R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V
11、7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H222.(此题 10 分)如图，在 ABC中，ACB=90，AC=BC，BE CE 于 E，AD CE 于 D，AD=5cm，DE=3cm，求 BE 的长.23.(此题 10 分)如图，CA=CD，BCE=ACD，BC=EC，求证：A=D.24.(此题 12 分)如图，平面直角坐标系中，已知点A(a1，a+b)，B(a，0)，且 +(a 2b)2=0，C为 x轴上点 B 右侧的动点，以AC为腰作等腰 A
12、CD，使AD=AC，CAD=OAB，直线DB交 y 轴于点 P.(1)求证：AO=AB;(2)求证：OC=BD;(3)当点 C 运动时，点 P在 y 轴上的位置是否发生改变，为什么?参考答案一、选择题1.B 2.B 3.A 4.C 5.C 6.C 7.C 8.D.9.A 10.A 二、填空题11.利用三角形的稳定性.12.M=N或A=NCD或 AM CN或 AB=CD.13.28 14.24 15.120 16.三、解答题17.解：18.解：aba=a(b1).19.解:原式=()=?=文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R
13、1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7
14、W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8
15、H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B
16、2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5
17、V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5
18、S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X
19、9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H220.解：AFE=90，AEF=90 A=90 35=55，CED=AEF=55，ACD=180 CED D=180 5542=83.答：ACD的度数为 83.21.证明：如图，过点A作 AP BC 于 P.AB=AC，BP=PC;AD=AE，DP=PE，BP DP=PC PE，BD=CE.22.解：ACB=90，BCE+ECA=90，AD CE 于 D，CAD+ECA
20、=90，CAD=BCE.又ADC=CEB=90，AC=BC，ACD CBE，BE=CD，CE=AD=5，BE=CD=CE DE=5 3=2(cm)23.解：BCE=ACD，文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X
21、9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4
22、J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10
23、P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX
24、7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7
25、P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X
26、10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2BCE+ACE=ACD+ACE，即ACB=DCE，在ABC和DEC中，CA=CD，ACB=D
27、CE，BC=EC ABC DEC(SAS)，A=D.24.解：(1)+(a 2b)2=0，0，(a 2b)20，=0，(a 2b)2=0，解得：a=2，b=1，A(1，3)，B(2，0)，OA=，AB=，OA=AB;(2)CAD=OAB，CAD+BAC=OAB+BAC，即OAC=BAD，在OAC和BAD中，OA=AB，OAC=BAD，AC=AD，文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编
28、码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6
29、 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1
30、ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文
31、档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1
32、Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W
33、1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H
34、2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2OAC BAD(SAS)，OC=BD;(3)点 P在 y 轴上的位置不发生改变.理由：设 AOB=ABO=，由(2)知AOC ABD，ABD=AOB=，OB=2，OBP=180 ABO ABD=180 2为定值，POB=90，OP长度不变，点 P在 y 轴上的位置不发生改变.文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S
35、8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9
36、B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J
37、5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P
38、5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7
39、X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P
40、4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2文档编码:CX7X9B2R1Z6 HS7P4J5V7W1 ZS8X10P5S8H2