文档库 最新最全的文档下载
当前位置:文档库 › 高二中专班期中考试题

高二中专班期中考试题

高二中专班期中考试题
高二中专班期中考试题

一、选择题(共30分,每题1.5分)

1、下列那组指令为圆弧插补指令()

A、G02/G00

B、G03/G01

C、G00/G01

D、G02/G03

2、广数980系统中,下列指令用于表示转速单位为“r/min”的G指令是。

()

A、G96

B、G97

C、G99

D、G98

3、采用G75编程时循环起点为(X32Z-15),切槽的终点为(X28Z-20)

切槽刀宽为3mm则G75指令中关于参数P的指定,正确的是()

A、P1.5

B、P2.5

C、P1500

D、P2500

4、采用G75编程时循环起点为(X32Z-15),切槽的终点为(X28Z-20)

则G75指令中关于参数Q的指定为Q1200,则最后一次平移量为

()

A、1.2mm

B、0.8mm

C、0.4mm

D、0.2mm

5、关于FANUC、广数系统车床中的指令G92,下列描述不正确的是。

( )

A、内外螺纹加工指令

B、模态指令

C、单一循环指令C、不能加工左旋螺纹

6、进给功能用于指定()

A、进给速度

B、进刀深度

C、进给转速

D、进给方向

7、指定恒线速度切削的指令是()

A、G96

B、G72

C、G99

D、G98

8、T0102表示()

A、1号刀1号刀补

B、1号刀2号刀补

C、2号刀1号刀补

D、2号刀2号刀补

9、G00指令是刀具以()移动方式,从当前位置运动并定位于目标的指令。

A、点动

B、走刀

C、快速

D、标准

10、程序段G02X30 Z20 R5中R5表示

A、圆弧的始点

B、圆弧的终点

C、圆弧的半径

D、退刀量

11、G90X40Z-50R-5F0.1,完成的是()的加工。

A、圆柱面

B、圆锥面

C、圆弧面

D、螺纹

12、主程序结束,程序返回至开始段的指令是()

A、M00

B、M30

C、M08

D、M09

13、直线插补的指令是()

A、G00

B、G03

C、G01

D、G02

14、下列表示无条件程序暂停的指令是()

A、M00

B、G00

C、M03

D、M01

15、工件坐标系的零点一般在()。

A、机床零点

B、换刀点

C、工件的断面

D、限位点

16、在FANUC、广数系统前置车床车削一段起点为(X40Z-20)、终点为(X50Z-25)、

半径位5mm的外圆凸圆弧面,正确的程序段是()

A、G02 X40 Z-20 R5

B、G02 X50 Z-25 R5

C、G03 X40 Z-20 R5

D、G03 X50 Z-25 R5

17、外螺纹M25x1.5mm的小径应车至()mm

A、25

B、23.5 C.26.5 D、24

18、国家标准的代号为()

A、JB

B、QC

C、GB

D、TB

19、企业文化的整合功能指的是它在()方面的作用。

A、互不相干

B、凝聚人心

C、增强竞争意识

D、自律

20、职业道德与人的事业关系是()

A、有职业道德的人一定能够获得事业的成功

B、没有职业道德的人不会获得成功

C、事业成功的人往往具有较高的职业道德

D、缺乏职业道德的人往往更容易获得成功

二、判断题(共20分,每题1分)

1、G71指令为循环粗车车断面指令。()

2、在FANUC、广数系统中G75指令不能用于内沟槽的加工。()

3、切槽时,进给量加大,不易使切刀折断。()

4、开机前,应检查检查机床各部件机构是否完好,各操作按钮是否处于正确位置。()

5、G70指令是精加工切削循环指令。()

6、M05 S500表示主轴转速为500r/mm。()

7、各工业废料可以倾倒于江河湖泊或水库之中。()

8、G72P_Q_U_W_F_中W表示Z轴精加工余量。()

9、进入生产车间可以穿背心、短裤、和拖鞋。()

10、在工作中应保质保量,按时完成任务。互教互学,取长补短。不马虎

了事、带考带做。()

11、G74主要用于外圆切槽循环。()

12、G92X_Z_F_中F表示车削时的进给量()

13、以生产实践和实验研究累积的有关加工余量的资料数据为基础,结合

实际加工情况来确定加工余量的方法称为经验估算法。()

14、数控车床垂直于主轴的称为Z轴。()

15、切削用量中切削速度对刀具磨损的影响最大。()、

16、加工细长轴时一般采用一夹一顶的装夹。()

17、数控机床适用于大批量和复杂轨迹零件的加工。()

18、数控车床在自动加工前,第一刀一般采用“单段’’模式车削。()

19、在指定的固定循环之前,必须用辅助功能M03使主轴正转。()

20、数控编程时,不用考虑工件的坐标。()

三、填空题(共20分,每空1分)

1、切削运动分为_________和____________

2. 切削液的四大作用为_______ ________ _______ _______

3、切削三要素为________ ________ _________

4、机械零件的真实大小以图样的_______ 为依据。

5、循环指令结束后,刀具停在________位置。

6、数控系统的面板由________ ______ _______ _______组成。

7、请写出G71的编程格式___________________________

8、5S指的是_____________________

四、简答题(共30分,每题10分)

1、在安全生产中应该注意哪些问题,怎样理解安全生产。

2、请标注下图所示零件图各点坐标。

一次函数历年中考应用题

历年中考数学“一次函数试题精选” 1.(2010山东德州)某游泳池的横截面如图所示,用一水管向池内持续注水,若单位时间内注入的水量保持不变,则在注水过程中,下列图象能反映深水区水深h 与注水时间t 关系的是 、 (A ) (B ) (C ) (D ) 【答案】A 2.(2010重庆市)小华的爷爷每天坚持体育锻炼,某天他慢步到离家较远的绿岛公园,打了一会儿太极拳 后跑步回家。下面能反映当天小华的爷爷离家的距离y 与时间x 的函数关系的大致图象是( ) 答案:B 3(2010年浙江省东阳县)汽车经过启动、加速行驶、匀速行驶、减速行驶之后停车,若把这一过程中汽车的行驶路程s 看作时间t 的函数,其图像可能是( ) 【答案】A 4(2010年四川省眉山)某洗衣机在洗涤衣服时经历了注水、清洗、排水三个连续过程(工作前洗衣机内 无水),在这三个过程中洗衣机内水量y (升)与时间x (分)之间的函数关系对应的图象大致 为 【答案】D 5.(2010年安徽省芜湖市)要使式子有意义,a 的取值范围是() A .a ≠0 B .a >-2且a ≠0 C .a >-2或a ≠0 D .a ≥-2且a ≠0 【答案】D (A) (B) (C) (D)

6 (2010重庆市潼南县)已知函数y=的自变量x取值范围是() A.x﹥1 B.x﹤-1 C. x≠-1 D. x≠1 答案:C 7.(2010年浙江台州市)函数的自变量的取值范围是. 【答案】 8.(2010年益阳市)如图2,火车匀速通过隧道(隧道长大于火车长)时,火车进入隧道的时间与 火车在隧道内的长度之 间的关系用图象描述大致 是 A.B.C. D. 【答案】A 9.(2010江苏泰州,13,3分)一次函数(为常数且)的图象如图所示,则使成立的的取值范围为. 【答案】x<-2 10.(2010年重庆)小华的爷爷每天坚持体育锻炼.某天他慢步到离家较远的绿岛公园,打了一会儿太极拳后跑步回家.下面能反映当天小华的爷爷离家的距离y与时间x的函数关系的大致图象是() 【答案】C 12.(2010江苏泰州,5,3分)下列函数中,y随x增大而增大的是()A. B. C. D. 【答案】C

2018年中考数学真题汇编:二次函数(含答案)

中考数学真题汇编:二次函数 一、选择题 1.给出下列函数:①y=﹣3x+2;②y= ;③y=2x2;④y=3x,上述函数中符合条作“当x>1时,函数值y随自变量x增大而增大“的是() A. ①③ B. ③④ C. ②④ D. ②③ 【答案】B 2.如图,函数和( 是常数,且)在同一平面直角坐标系的图象可能是 () A. B. C. D. 【答案】B 3.关于二次函数,下列说法正确的是() A. 图像与轴的交点坐标为 B. 图像的对称轴在轴的右侧 C. 当时,的值随值的增大而减小 D. 的最小值为-3 【答案】D 4.二次函数的图像如图所示,下列结论正确是( ) A. B. C. D. 有两个不相等的实数根 【答案】C 5.若抛物线与轴两个交点间的距离为2,称此抛物线为定弦抛物线,已知某定弦抛物线的对称轴为直线,将此抛物线向左平移2个单位,再向下平移3个单位,得到的抛物线过点( ) A. B. C. D.

【答案】B 6.若抛物线y=x2+ax+b与x轴两个交点间的距离为2,称此抛物线为定弦抛物线。已知某定弦抛物线的对称轴为直线x=1,将此抛物线向左平移2个单位,再向下平移3个单位,得到的抛物线过点() A. (-3,-6) B. (-3,0) C. (-3,-5) D. (-3,-1) 【答案】B 7.已知学校航模组设计制作的火箭的升空高度h(m)与飞行时间t(s)满足函数表达式h=﹣t2+24t+1.则下列说法中正确的是() A. 点火后9s和点火后13s的升空高度相同 B. 点火后24s火箭落于地面 C. 点火后10s的升空高度为139m D. 火箭升空的最大高度为145m 【答案】D 8.如图,若二次函数y=ax2+bx+c(a≠0)图象的对称轴为x=1,与y轴交于点C,与x轴交于点A、点B(﹣1,0),则①二次函数的最大值为a+b+c;②a﹣b+c<0;③b2﹣4ac<0;④当y>0时,﹣1<x<3,其中正确的个数是() A. 1 B. 2 C. 3 D. 4 【答案】B 9.如图是二次函数(,,是常数,)图象的一部分,与轴的交点在点 和之间,对称轴是.对于下列说法:①;②;③;④ (为实数);⑤当时,,其中正确的是() A. ①②④ B. ①②⑤ C. ②③④ D. ③④⑤ 【答案】A

【英语】高二英语翻译模拟试题及解析

【英语】高二英语翻译模拟试题及解析 一、高中英语翻译 1.高中英语翻译题:Translate the following sentences into English, using the words given in the brackets. 1.今年元旦我们玩得很开心。(enjoy) 2.舅舅昨天寄给我一张卡片,祝贺我18岁生日。(congratulate) 3.经过多年的建设,这个小镇现在和地震前一样充满了活力。(as...as) 4.演出以一段五十多岁的人耳熟能详的经典音乐开始。(familiar) 5.她一看完那个关于已灭绝物种的电视节目,就立志加入野生动物保护组织。(No sooner) 【答案】 1.We enjoyed ourselves this New Year’s Day this year. 2.My uncle sent me a card yesterday to congratulate / congratulating me on my 18th birthday. 3.After years of / years’ construction, the little t own is now as lively as it was before the earthquake / it used to be before the earthquake. 4.The performance began with a piece of classical music which was familiar to people in their fifties. 5.No sooner had she watched the TV program on the extinct species than she made up her mind to join the wildlife protection organization. 【解析】 1.根据“今年元旦”可知,该句用一般过去时,玩得很开心用词组enjoy oneself 2.根据“昨天”可知,该句用一般过去时,congratulate 的用法是congratulate sth或者congratulate sb on sth 3.根据“经过多年的建设”可知,后面描述的是建设后的情形,即现在的情形,因此用一般现在时,as..as..的用法是形容词或者副词放在中间。 4.根据句意可知,演出已经开始了,事情发生在过去,因此用一般过去时,familiar的用法是sb be familiar with sth 或者sth be familiar to sb 5.no sooner的句型为no sooner ...than,因为no sooner是否定词,因此no sooner后面要用部分倒装的句式。 2.高中英语翻译题:Directions:Translate the following sentences into English, using the words given in the brackets. 1.晚上别喝太多的咖啡,会睡不着觉的。(or) 2.事实证明,保持快乐的心态会降低得心脏病的风险。(It) 3.乐观的人不会过分怀念美好的旧时光,因为他们正忙着创造新的回忆。(create)4.追求稳定并不是什么坏事,很多时候这样的态度在促使我们提升自我、挑战难度、攀登高峰。(when)

人教版高中英语选修七高二年级半月考试卷( 英语 )

高二年级半月考试卷(英语) 使用时间:2015年4月2日测试时间: 90分钟总分: 120分 第一部分阅读理解(共两节,满分40分) 第一节(共15小题;每小题2分,满分30分) A A woman who lived in a coma(昏迷)for 42 years, unendingly cared for by her family, died Wednesday in her home in Miami Gardens, Fla. Edwarda O’Bara was a 17-year-old high school student in 1970 when she became sick from her diabetes(糖尿病)medication and slipped into a diabetic coma. Just before she lost consciousness, Edwarda asked her mother, Kaye O’Bara, to never leave her side, and her family never d id. Edwarda’s father, Joe O’Bara, and Kaye took care of their daughter—reading to her, playing her music, making sure she was turned every two hours, bathed, given insulin(胰岛素)and given nourishment through a feeding tube—until their deaths in 1976 and 2008, respectively. After that, Edwarda’s sister Colleen O’Bara took over. Her family’s unending care for her became a story told across the world. And visitors from across the world traveled to the Miami Gardens home every year, sometimes appearing at the doorstep on random days, other times for Edwarda’s yearly birthday party, a cheerful affair with decorations, balloons and cake. Through it all, Edwarda remained in a coma. But to her family and followers she remained alive. Colleen O’Bara described her as “the best sister in the whole wide world.” “She taught me so much, especially after she was in the coma, ” Colleen O’Bara said, “She taught me so much about unconditional love that I couldn’t say I had it before. She taught me about patience that I didn’t have before. I learned so much from taking care of my sister. It’s like I grew up overnight. ” In an announcement of Edwarda’s death posted Thursday on a website, Colleen O’Bara wrote: “Yesterday while taking care of Edwarda I noticed her looking directly a t me and gave me the biggest smile I had ever seen. She then closed her eyes and joined my Mom in Heaven. ” 1. How old was Edwarda O’Bara when she died? A. 56. B. 57. C. 58. D. 59. 2. Edwarda’s parents did everyt hing below to take care of her EXCEPT_____________. A. reading to her B. playing her music C. taking a walk with her D. turning her every two hours 3. What’s the main idea of the passage? A. Edwarda’s family’s selfless care for her became a story told across the world. B. Edwarda became sick from her diabetes medication and slipped into a diabetic coma. C. Edwarda died after 42 years of coma and her family kept their promise to take good care of her. D. Edwarda smiled when she died. B When Josephine Cooper was growing up, she learned the importance of charity from her parents.

中考专题一次函数

第8题 中考专题 (一)一次函数 一、选择题 (2010哈尔滨)小明的爸爸早晨出去散步,从家走了20分到达距离家800米的公园,他在公园休息了10分,然后用30分原路返回家中,那么小明的爸爸离家的距离S 与离家的时间t 之间的函数关系图象大致是( ). (2010镇江)两直线1:,12:21+=-=x y l x y l 的交点坐标为( ) A .(—2,3) B .(2,—3) C .(—2,—3) D .(2,3) (2010遵义) 在 “寻宝”游戏中,“寻宝”人找到了如图所标示的两个标志点A (2,3)、B (4,1), A 、 B 两点到“宝藏”点的距离都是10,则“宝藏”点的坐标是( ) A .(1,0) B.(5,4) C.(1,0)或(5,4) D.(0,1)或(4,5) (2010玉溪) 王芳周末到新华书店购买资料。如图4,是她离家的距离与时间的函数图象.若黑点表示她家的位置, 则王芳走的路线可能是( ) (2010y =x y x 的值增加2时,则y 值( ) A .增加4 B .减小4 C .增加2 D .减小2 (2010连云港)某公司准备与汽车租凭公司签订租车合同,以每月用车路程x 计算,甲汽车租凭公司每月收取的租赁费为y 1元,乙汽车租凭公司每月收取的租赁费为y 2元,若y 1、y 2与x 之间的函数关系如图所示,其中x =0对应的函数值为月固定租赁费,则下列判断错误.. 的是( ) A .当月用车路程为2000km 时,两家汽车租赁公司租赁费用相同 B .当月用车路程为2300km 时,租赁乙汽车租赁公车比较合算 C .除去月固定租赁费,甲租赁公司每公里收取的费用比乙租赁公司多 D .甲租赁公司平均每公里收到的费用比乙租赁公司少 (2010珠海)在平面直角坐标系中,将点P (-2,3)沿x 轴方向 向右平移3个单位得到点Q ,则点Q 的坐标是( ) A. (-2, 6) B. (-2, 0) C. (-5, 3) D. (1, 3) (2010温州)直线y=x+3与y 轴的交点坐标是( ) A. (0,3) B. (0,1) C. (3,O) D. (1,0) (2010益阳)如图,火车匀速通过隧道(隧道长大于火车长)时,火车进入隧道的时间x 与火车在隧道内的长度y

二次函数中考真题汇编[解析版]

二次函数中考真题汇编[解析版] 一、初三数学二次函数易错题压轴题(难) 1.如图,二次函数y=ax2+bx+c交x轴于点A(1,0)和点B(3,0),交y轴于点C,抛物线上一点D的坐标为(4,3) (1)求该二次函数所对应的函数解析式; (2)如图1,点P是直线BC下方抛物线上的一个动点,PE//x轴,PF//y轴,求线段EF的最大值; (3)如图2,点M是线段CD上的一个动点,过点M作x轴的垂线,交抛物线于点N,当△CBN是直角三角形时,请直接写出所有满足条件的点M的坐标. 【答案】(1)y=x2﹣4x+3;(2)EF的最大值为 2 4 ;(3)M点坐标为可以为(2, 3),(55 2 + ,3),( 55 2 - ,3). 【解析】 【分析】 (1)根据题意由A、B两点坐标在二次函数图象上,设二次函数解析式的交点式,将D点坐标代入求出a的值,最后将二次函数的交点式转化成一般式形式. (2)由题意可知点P在二次函数图象上,坐标为(p,p2﹣4p+3).又因为PF//y轴,点F 在直线BC上,P的坐标为(p,﹣p+3),在Rt△FPE中,可得FE2PF,用纵坐标差的绝对值可求线段EF的最大值. (3)根据题意求△CBN是直角三角形,分为∠CBN=90°和∠CNB=90°两类情况计算,利用三角形相似知识进行分析求解. 【详解】 解:(1)设二次函数的解析式为y=a(x﹣b)(x﹣c), ∵y=ax2+bx+与x轴r的两个交点A、B的坐标分别为(1,0)和(3,0), ∴二次函数解析式:y=a(x﹣1)(x﹣3). 又∵点D(4,3)在二次函数上, ∴(4﹣3)×(4﹣1)a=3, ∴解得:a=1. ∴二次函数的解析式:y=(x﹣1)(x﹣3),即y=x2﹣4x+3.

高二英语听力模拟试题1.doc

高二英语听力模拟试题1 第一节(共15小题:每小题2分,满分30分) 听下面5段对话或独白。每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。听每段对话或独白前,你将有时间阅读各个小题,每小题5秒钟;听完后,各个小题将给出5秒钟的作答时间。每段对话或独白读两遍。 听第1段材料,回答第1—2题。 1. Where are the two speakers doing? A. Visiting a place of interest. B. Checking a building. C. Painting the building. 2. What do you know about the woman? A. She’s very glad. B. She’s very tired. C. She’s very old. 听第2段材料,回答第3—5题。 3. Who is Jack? A. The speakers’ son. B. The speakers’ friend. C. The speakers’ pupil. 4. What is the man going to do in Los Angeles? A. To attend a friend’s birthday party. B. To meet a friend. C. To attend some meetings. 5. When will the man try to return from Los Angeles? A. On Thursday evening. B. On Friday morning. C. On Saturday morning. 听第3段材料,回答第6—8题。 6. When did the conversation take place? A. In October. B. In November. C. In December. 7. Where did they make the conversation? A. At the customs of the USA. B. At a university of the USA. C. At Tianjin University. 8. Which of the following is true? A. Alice met Mr. Chen for the first time. B. Both Mr. Chen and Mr. Wu are visiting scholars. C.Mr. Chen and Mr. Wu invited Alice to their apartment. 听第4段材料,回答第9—12题。 9. What does Frank want to meet Professor White for? A. To ask him questions about the experiment. B. To invite him to an exhibition. C. To make an appointment with him. 10. What will Professor White so next week? A. Meet with somebody. B. Have a holiday. C. Go to the Captain Hall. 11. When will he probably meet Professor White? A. At four this afternoon. B. At three this afternoon. C. At two this afternoon. 12. What will Frank have to give up? A. Seeing Professor Hunter. B. Visiting the exhibition. C. Meeting Professor White.

高二英语月考试卷及答案(可编辑修改word版)

(命题人:陈晓燕) 时间:120 分钟满分120 高二英语月考试卷10.What is the probable relationship between the man and the woman? A. They are husband and wife B. They are friends C. They are newly-married couple. 第二部分:英语知识运用(共三节,满分35 分) 第一卷(选择题部分,共90 分) 第一部分:听力(共10 小题,每小题1分,共10 分) 第一节:听下面5 段对话,每段对话后有一小题,从题中所给的A、B、C 三个选项中选出最佳选项,并标在试卷的相应位置。听完每段对话,你有10 秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。 1.What was the score? A. 0: 40 B. 0: 14 C. 0: 4 2.When will the shirts be finished? A.Sunday afternoon B. Friday afternoon C . Saturday afternoon 3.What does the man mean? A.It will take him a long time to help the woman B. He can help her for a while C. It won’t take a long time for him to help her 4.How much did the man pay for the tickets? A. $ 12 B. $ 16 C. $ 4 5.Where is the woman going now? A .To school B .To the shop C. To her friend’s house 第二节:听下面5 段对话或独白。每段对话或独白后有几小题,从题中所给的A、B、C 三个选项中选出最佳选项,并标在试卷的相应位置。听完每段对话或独白,你将有时间阅读各个小题,每小题5 秒钟的时间作时间。。每段对话或独白读两遍。 听第6 段材料,回答第6---7 题 6.Which of the following did the doctor NOT do? A.Take the temperature B. Look at the throat C. Examine the eyes 7.How often should Richard take the medicine? A.Four times a day B. Three times a day C. Twice a day 听第7 段材料,回答第8---10 题 8.How is the kitchen? A.It’s very big B. It’s well equipped C. It’s too modern 9.What is the woman going to do next? A.To buy some furniture B. To move into the house C. To decorate the house 第一节语音知识(共5 小题,每小题1 分,满分5 分) 从 A BCD 四个选项中,找出其划线部分与所给单词的划线部分读音相同的选项,并在答题卡上将该项涂黑。 11.course A. journey B. four C. labour D. hour 12.match A. marry B. separate C. machine D. many 13.watched A .filled B. recognized C. whispered D. practised 14.climb A. thumb B. method C. rude D. applaud 15.how A. sow B. bow C. morrow D. throw 第二节语法和词汇知识(共20 小题,每小题1 分,满分20 分) 16.it is to have a cold drink on such a hot day! A. What a fun B. What fun C. How fun D. How a fun 17 ------ Mr Bardon changed his mind to take part in the movement ? ----- After he listened to the speech by Mr King. A. When was that it B. When was it that C. When was that D. When was it 18.Outside were four large stone figures, was 20 metres high. A.each of them B. all of them C. each of which D. all of which 19.With the boy the way ,we found that faraway village very easily. A. led B. leading C. to lead D. being led 20 ------ Robert is indeed a wise man. ----- Oh, yes , how I have regretted his advice. A. to take B. not taking C. not to take D. taking 21.his pale face ,we all suggested to see the doctor right away. A. Seeing ; he going B. Having seen ;him go C. Seeing ;his going D. Seen ;him going 22.Who did the manager of the company the report? A. have writing B. have write C. have writes D. have to write 23. back to the Ming Dynasty, the temple can offer us much useful information about history.

一次函数相关的中考压轴题(含分析和答案)

一次函数是初中数学的重点内容之一,也是中考的主要考点。现举几例以一次函数为背景的中考压轴题供同学们在中考复习时参考 一.解答题(共30小题) 1.在平面直角坐标系中,△AOC中,∠ACO=90°.把AO绕O点顺时针旋转90°得OB,连接AB,作BD⊥直线CO 于D,点A的坐标为(﹣3,1). (1)求直线AB的解析式; (2)若AB中点为M,连接CM,动点P、Q分别从C点出发,点P沿射线CM以每秒个单位长度的速度运动,点Q沿线段CD以每秒1个长度的速度向终点D运动,当Q点运动到D点时,P、Q同时停止,设△PQO的面积为S(S≠0),运动时间为T秒,求S与T的函数关系式,并直接写出自变量T的取值范围; (3)在(2)的条件下,动点P在运动过程中,是否存在P点,使四边形以P、O、B、N(N为平面上一点)为顶点的矩形?若存在,求出T的值. 2.如图1,已知直线y=2x+2与y轴、x轴分别交于A、B两点,以B为直角顶点在第二象限作等腰Rt△ABC (1)求点C的坐标,并求出直线AC的关系式. (2)如图2,直线CB交y轴于E,在直线CB上取一点D,连接AD,若AD=AC,求证:BE=DE. (3)如图3,在(1)的条件下,直线AC交x轴于M,P(,k)是线段BC上一点,在线段BM上是否存在一点N,使直线PN平分△BCM的面积?若存在,请求出点N的坐标;若不存在,请说明理由. 3.如图直线?:y=kx+6与x轴、y轴分别交于点B、C,点B的坐标是(﹣8,0),点A的坐标为(﹣6,0)(1)求k的值. (2)若P(x,y)是直线?在第二象限内一个动点,试写出△OPA的面积S与x的函数关系式,并写出自变量x的取值范围. (3)当点P运动到什么位置时,△OPA的面积为9,并说明理由.

一元二次函数中考试题选编

一元二次函数综合练习题 1、二次函数2(0)y ax bx c a =++≠的图象如图所示,对称轴是直线1x =,则下列四 个结论错误.. 的是A .0c > B .20a b += C .2 40b ac -> D .0a b c -+> 2、已知二次函数2y ax bx c =++的图象如图所示,有以下结论:①0a b c ++<;② 1a b c -+>;③0abc >;④420a b c -+<;⑤1c a ->其中所有正确结论的序号是 ( ) A .①② B . ①③④ C .①②③⑤ D .①②③④⑤ 第2题 第3题 第题 3、二次函数)0(2≠++=a c bx ax y 的图象如图,下列判断错误的是( ) A .0

(完整)高二英语模拟试卷

英语学考模拟试题 本试题卷分听力技能、知识运用、阅读技能、写作技能四个部分,共7页。时量120分钟,满分100分。 第一部分听力技能(略) 第二部分知识运用(共两节,满分20分) 三、单项填空(共10小题;每小题1分,满分10分) 从A、B、C、D选项中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。 例It is generally considered unwise to give a child ______ he or she wants. A however B whatever C whichever D whenever 答案是B。 21 I often go to the school library with ______ friends at weekends. A my B mine C me D I 22 Smoking kills, so you ______ stop smoking. A may B can C must D dare 23 We have not given up the search for the missing plane MH370, ______? A don’t we B haven’t we C do we D have we 24 This is the city ______ Daniel visited last summer vacation. A who B which C whom D whose 25 ______ is reported that the No.2 Underground in Changsha is now in use. A It B That C This D There 26 Sarah wants to know ______ she has passed the exam or not. A why B how C whether D what 27 Travelling ______ a good way to learn about the world. A is B are C have D has 28 The 31st Summer Olympic Games ______ in Brazil in 2016. A have held B held C are held D will be held 29 Both Jeff and Joan have been learning Chinese ______ they came to China in 2013. A while B since C until D before 30 You can ask your teachers ______ you when you have trouble. A helps B helped C to help D helping 四、完形填空(共10小题;每小题1分,满分10分) 阅读下面短文,掌握其大意,然后从第31至第40小题所给的A、B、C、D选项中,选出最佳选项,并在答题卡上将该项涂黑。 Have you ever heard the radio club in our school? It is great because it is run by the students for the school. Kate Jones is 31 as she is one of the hosts. It was 32 two years ago. One day, Kate just began thinking about 33 for everyone, so she asked the headmaster if music could be played during break times. He agreed to the 34 , and two years later Kate is in charge of the radio club 35 the oldest student member. The club is much more than music. Every morning the hosts 36 their schoolmates about the weather, recent news, and some special messages that they are required to broadcast. When parents come to visit the school and talk to the teachers, Kate and her fellows 37 play songs sung by students, and also give messages to inform the 38 of events such as outings and school

高二英语月考试卷.doc

高二英语月考试卷 (卷面分:150 分考试时间:120 分钟) 第Ⅰ卷 第一部分:听力(共两节,满分30 分) 第一节(共5小题;每小题分,满分分) 听下面 5 段对话。每段对话后有一个小题,并标在试卷的相应位置。听完每段对话后,你都有从题中所给的A、B、C 三个选项中选出最佳选项, 10 秒钟的时间来回答有关小题和阅读下一小 题。每段对话仅读一遍。 1.Who joined the company recently A. Some photographer. B. An art director. C. Some designers. 2.What does the woman mean A. She is a visitor. B. She just moved in here. C. She knows the manager. 3.What did the woman do last weekend A. She stayed at home. B. She went boating. C. She took a walk. 4.Where is National City Bank 5.What will Lisa do after work A. Pick up her friends. B. Go for a drink with her friends. C. Meet her friends at a repair shop. 第二节(共15 小题;每小题1. 5 分,满分22. 5分) 听下面 5 段对话或独白。每段对话或独白后有几个小题,从题中所给的A, B 、 C 三个选项中选出最佳选项,并标在试卷的相应位置。听每段对话或独白前,你将有时间阅读 各个小题,每小题 5 秒钟;听完后,各小题将给出 5 秒钟的作答时间。每段对话或独白读两遍。 听第 6 段材料,回答第 6 至 7 题。 6. What does the man think of the French restaurant A. It’s too far away. B. The price is too high. C. The menu is too old. 7. Why does the man want to eat in A. He ’s tired of eating out. B. He ’s good at cooking. C. He ’s in bad mood. 听第 7 段材料,回答第8 至 10 题。 8. What is Tony’s nationality A. British. B. Canadian. C. French. 9. Why has Tony come to China A. To seek a better life. B. To do banana trade. C. To find his root. 10. How does Tony find his experience in China A. Interesting. B. Crazy. C. Disappointing. 听第 8 段材料,回答第11 至 13 题。 11. What are the speakers talking about A. Old schoolmates. B. High school life. C. A company meeting. 12.What did Sally try to show her friends A. She was very happy. B. She was interested in Simon. C. She was successful in

一次函数中考试题分类汇编含答案

11、一次函数 要点一:函数的概念及自变量取值范围的确定 一、选择题 1、(2009·包头中考)函数 y =中,自变量x 的取值范围是( ) A .2x >- B .2x -≥ C .2x ≠- D .2x -≤ 【解析】选B. a 的范围是0a ≥;∴y =中x 的范围由20x +≥得2x ≥-。 2、(2009·成都中考)在函数1 31 y x =-中,自变量x 的取值范围是( ) A .13x < B . 13x ≠- C . 13x ≠ D . 13 x > 【解析】选C.分式的分母不为0.即3x -1≠0,解得13 x ≠. 3、(2009·广州中考)下列函数中,自变量x 的取值范围是x ≥3的是( ) A .3 1 -= x y B .3 1-=x y C .3-=x y D .3-=x y 答案:选D. 4、(2010·兰州中考)函数3 1 2-+-=x x y 中,自变量x 的取值范围是( ) A .x ≤2 B .x =3 C .x <2且x ≠3 D .x ≤2且x ≠3 【解析】选A.若使函数3 1 2++ -=x x y 有意义,应满足02≥-x 且03≠-x ,解得.2≤x

5、(2008·孝感中考)下列曲线中,表示y 不是x 的函数是( ) 【解析】选B.根据自变量x 固定,y 的值唯一得结论. 6、(2008·潍坊中考)某蓄水池的横断面示意图如下图,分深水区和浅水区,如果这个注满水的蓄水池以固定的流量把水全部放出.下面的图象能大致表示水的深度h 和放水时间t 之间的关系的是( ) 答案:选A 二、填空题 7、(2010·威海中考)在函数x y -=3中,自变量x 的取值范围 是 . 【解析】由二次根式的意义易得,3-x≥0,所以x≤3 答案: x≤3 h t O A . h t O B . h t O h t O D . h

相关文档
相关文档 最新文档