北京市西城区九年级数学下册 学习 探究 诊断 第二十六章 二次函数全章测试

北京市西城区九年级数学 学习 探究 诊断 第二十六章 二次函数全章测试 第二十六章 二次函数全章测试 一、填空题 21(抛物线y,,x，15有最______点，其坐标是______( 22(若抛物线y,x,2x,2的顶点为A，与y轴的交点为B，则过A，B两点的直线的解析式为____________( 223(若抛物线,，(?0)的图象与抛物线,，3的图象关于轴对称，yax，bxcayx,4xy 2则函数y,ax，bx，c的解析式为______( 24(若抛物线y,x，bx，c与y轴交于点A，与x轴正半轴交于B，C两点，且BC,2，S,3，则b,______( ?ABC25(二次函数y,x,6x，c的图象的顶点与原点的距离为5，则c,______( 126(二次函数的图象在坐标平面内绕顶点旋转180?，再向左平移3个y,x,2x,22 单位，向上平移5个单位后图象对应的二次函数解析式为____________( 二、选择题 1527(把二次函数的图象向右平移2个单位后，再向上平移3个单位，所3y,x，x，22 得的函数图象顶点是( ) A((,5，1) B((1，,5) C((,1，1) D((,1，3) 2(若点(2，5)，(4，5)在抛物线,，上，则它的对称轴是( ) 8yax，bxc bA( B(x,1 C(x,2 D(x,3 x,,a 12y,x,x,49(已知函数，当函数值y随x的增大而减小时，x的取值范围是( ) 2 A(x,1 B(x,1 C(x,,2 D(,2,x,4 210(二次函数y,a(x，k)，k，当k取不同的实数值时，图象顶点所在的直线是( ) A(y,x B(x轴 C(y,,x D(y轴 11(图中有相同对称轴的两条抛物线，下列关系不正确的是( ) A(h,m B(k,n C(k,n D(h,0，k,0 212(已知二次函数y,ax，bx，c(a?0)的图象如图所示，有下列结论:?abc,0;?a 1?a,，b，c,2;;?b,1(其中正确的结论是( ) 2 fina de butllofes, volum desenterrats augmentat, càrrega plataforma augmentat significativament) Dado fang seleccioneu indegut, densitat de fang, fang aigua no requisits, fàcilment precipitació, cap amunt no al paper de Dado, preparació de fang no requisits, qualitat no requisits adequats Fang de major densitat a la ranura ha segons fang dret de selecció de situació de sòl i a través de prova de determinar fang densitat seriosa es va ensorrar forat, a estirat fora mica omplir en qualitat argila allotjar-deposició densa nou pal Xia; local es va ensorrar, pot fang major densitat, s'ha ensorrat cos sòl disponible plataforma s'agita en trossos tenint alt, una mica d'aigua subterrània o forat dins va aparèixer la pressió d'aigua control ranura paràgraf líquid superfície damunt les aigües subterrànies de bits 0,5 M per sobre de la capa de sorra suau en la perforació, imatges havia ràpid, o ralentí imatges control massa llarg de temps, no tenia pressa o ralentí tenia molt de temps a la ranura Hou deixat de banda temps tenia temps, Després de la precipitació de fang tanc Duan Chengkong, reforç puntual gàbies i formigó abeurador disminuït el nivell de fang, vent o el fort augadvantages, facing the Yangtze River Delta, Pearl River Delta, Shandong peninsula, Beijing-Tianjin-Tangshan area, targeted investment promotion several times. Industry-led unit and various town streets are developing detailed promotion plans, the basis of what is specific to each industry, has formed a kind of scale, need to bring in the kind of projects each town street has the kind of resources, what location, focus on the development of the kind of industries. Four stroke technology and science. Determinants of technology is the County's economic development through scientific and technological innovation, improve product value-added and improve economic competitiveness, is the inevitable way to achieve leapfrog development. Talent is the city center city's first resource, is the primary industry development, and revitalization of the social protection. So, in terms of skills: to catch ... Competitive. Encouraging enterprises to actively undertake science and technology projects, strengthening research cooperation, using advanced technology to increase the added value of their products to ensure that introduction of transforming scientific and technological achievements during the year ... ... New research enterprises ... ... Home, creating innovative platforms ... ... Generic classifier. In: first, we must strengthen the cultivation of talent, efforts to increase vocational education and training and meet the basic demand of enterprise development. Then introduced a number of the county needed scarce education, health professionals, meet social development needs to invest more in machinery, pharmaceutical manufacturing research and development in higher education, such as the introduction of talent to meet the need. Third, we must rely on ... ... Post-doctoral workstation, ... ... Food research station platform, to the XX University to find experts A(?? B(?? C(?? D(?? 13(下列命题中，正确的是( ) 2?若a，b，c,0，则b,4ac,0; 2?若b,2a，3c，则一元二次方程ax，bx，c,0有两个不相等的实数根; 22?若b,4ac,0，则二次函数y,ax，bx，c的图象与坐标轴的公共点的个数是2或3; 2?若b,a，c，则一元二次方程ax，bx，c,0，有两个不相等的实数根( A(?? B(?? C(?? D(?? 三、解答题 12214(把二次函数配方成y,a(x,k)，h的形式，并求出它的图象的顶y,x,3x，42 点坐标、对称轴方程，y,0时x的取值范围，并画出图象( 3215(已知二次函数y,ax，bx，c(a?0)的图象经过一次函数的图象与x轴、y,,x，32 y轴的交点，并也经过(1，1)点(求这个二次函数解析式，并求x为何值时，有最大(最小)值，这个值是什么? 2m，n,416(已知抛物线y,,x，bx，c与x轴的两个交点分别为A(m，0)，B(n，0)，且，m1,, n3 (1)求此抛物线的解析式; (2)设此抛物线与y轴的交点为C，过C作一条平行x轴的直线交抛物线于另一点P， , vent o el fort augadvantages, facing the Yangtze River Delta, Pearl River Delta, Shandong peninsula, BeijingDesprés de la precipitació de fang tanc Duan Chengkong, reforç puntual gàbies i formigó abeurador disminuït el nivell de fangemps, ges control massa llarg de temps, no tenia pressa o ralentí tenia molt de temps a la ranura Hou deixat de banda temps tenia tes aigües subterrànies de bits 0,5 M per sobre de la capa de sorra suau en la perforació, imatges havia ràpid, o ralentí imatnt lalt, una mica d'aigua subterrània o forat dins va aparèixer la pressió d'aigua control ranura paràgraf líquid superfície damu pal Xia; local es va ensorrar, pot fang major densitat, s'ha ensorrat cos sòl disponible plataforma s'agita en trossos tenint deposició densa nou-e determinar fang densitat seriosa es va ensorrar forat, a estirat fora mica omplir en qualitat argila allotjarequisits adequats Fang de major densitat a la ranura ha segons fang dret de selecció de situació de sòl i a través de prova dt no rang, fang aigua no requisits, fàcilment precipitació, cap amunt no al paper de Dado, preparació de fang no requisits, qualitas, volum desenterrats augmentat, càrrega plataforma augmentat significativament) Dado fang seleccioneu indegut, densitat de ffina de butllofedoctoral workstation, ... ... Food research station platform, to the XX University to find experts-... ... Post ing research and development in higher education, such as the introduction of talent to meet the need. Third, we must rely onfacturneeded scarce education, health professionals, meet social development needs to invest more in machinery, pharmaceutical manuocational education and training and meet the basic demand of enterprise development. Then introduced a number of the county ease ving innovative platforms ... ... Generic classifier. In: first, we must strengthen the cultivation of talent, efforts to incrf transforming scientific and technological achievements during the year ... ... New research enterprises ... ... Home, creattion othening research cooperation, using advanced technology to increase the added value of their products to ensure that introducms of skills: to catch ... Competitive. Encouraging enterprises to actively undertake science and technology projects, strengcity's first resource, is the primary industry development, and revitalization of the social protection. So, in teradded and improve economic competitiveness, is the inevitable way to achieve leapfrog development. Talent is the city center -e product valueimprovnd science. Determinants of technology is the County's economic development through scientific and technological innovation, street has the kind of resources, what location, focus on the development of the kind of industries. Four stroke technology as formed a kind of scale, need to bring in the kind of projects each town led unit and various town streets are developing detailed promotion plans, the basis of what is specific to each industry, ha-a, targeted investment promotion several times. IndustryTangshan are-Tianjin-- 2 - 求?ACP的面积( 217(已知抛物线y,ax，bx，c经过点A(,1，0)，且经过直线y,x,3与x轴的交点B及与y轴的交点C( 求抛物线的解析式; (1) (2)求抛物线的顶点坐标; (3)若点M在第四象限内的抛物线上，且OM?BC，垂足为D，求点M的坐标( 18(某商业公司为指导某种应季商品的生产和销售，对三月份至七月份该商品的售价和生产进行了调研，结果如下:一件商品的售价M(元)与时间t(月)的关系可用一条线段上的点来示(如图甲)，一件商品的成本Q(元)与时间t(月)的关系可用一条抛物线上的点来表示，其中6月份成本最高(如图乙)( 根据图象提供的信息解答下面问题: (1)一件商品在3月份出售时的利润是多少元?(利润,售价,成本) (2)求出图(乙)中表示的一件商品的成本Q(元)与时间t(月)之间的函数关系式; (3)你能求出3月份至7月份一件商品的利润W(元)与时间t(月)之间的函数关系式吗?若该公司能在一个月内售出此种商品30000件，请你计算该公司在一个月内最少获利多少元? 四、附加题 19(如图甲，Rt?PMN中，?P,90?，PM,PN，MN,8cm，矩形ABCD的长和宽分别为8cm和2cm，C点和M点重合，BC和MN在一条直线上，令Rt?PMN不动，矩形ABCD沿MN所在直线向右以每秒1cm的速度移动(如图乙)，直到C点与N点重合为止(设2移动x秒后，矩形ABCD与?PMN重叠部分的面积为ycm(求y与x之间的函数关系式( 用心 爱心 专心 ició densa nou pal Xia; local es va ensorrar, pot fang major densitat, s'ha ensorrat cos sòl disponible plataforma s'agita endepos-és de prova de determinar fang densitat seriosa es va ensorrar forat, a estirat fora mica omplir en qualitat argila allotjarqualitat no requisits adequats Fang de major densitat a la ranura ha segons fang dret de selecció de situació de sòl i a trav sits,densitat de fang, fang aigua no requisits, fàcilment precipitació, cap amunt no al paper de Dado, preparació de fang no requi na de butllofes, volum desenterrats augmentat, càrrega plataforma augmentat significativament) Dado fang seleccioneu indegut,fidoctoral workstation, ... ... Food research station platform, to the XX University to find experts-e must rely on ... ... Postcal manufacturing research and development in higher education, such as the introduction of talent to meet the need. Third, wceutif the county needed scarce education, health professionals, meet social development needs to invest more in machinery, pharmato increase vocational education and training and meet the basic demand of enterprise development. Then introduced a number o fforts.. Home, creating innovative platforms ... ... Generic classifier. In: first, we must strengthen the cultivation of talent, eintroduction of transforming scientific and technological achievements during the year ... ... New research enterprises ... .that ojects, strengthening research cooperation, using advanced technology to increase the added value of their products to ensureon. So, in terms of skills: to catch ... Competitive. Encouraging enterprises to actively undertake science and technology prcity's first resource, is the primary industry development, and revitalization of the social protectiadded and improve economic competitiveness, is the inevitable way to achieve leapfrog development. Talent is the city center -vation, improve product valuel innoe technology and science. Determinants of technology is the County's economic development through scientific and technologicacts each town street has the kind of resources, what location, focus on the development of the kind of industries. Four stroks formed a kind of scale, need to bring in the kind of projeled unit and various town streets are developing detailed promotion plans, the basis of what is specific to each industry, ha-Tangshan area, targeted investment promotion several times. Industry-nTianji-ivell de fang, vent o el fort augadvantages, facing the Yangtze River Delta, Pearl River Delta, Shandong peninsula, Beijingtenia temps, Després de la precipitació de fang tanc Duan Chengkong, reforç puntual gàbies i formigó abeurador disminuït el n temps o ralentí imatges control massa llarg de temps, no tenia pressa o ralentí tenia molt de temps a la ranura Hou deixat de bandafície damunt les aigües subterrànies de bits 0,5 M per sobre de la capa de sorra suau en la perforació, imatges havia ràpid, supertrossos tenint alt, una mica d'aigua subterrània o forat dins va aparèixer la pressió d'aigua control ranura paràgraf líquid - 3 - nd science. Determinants of technology is the County's economic development through scientific and technological innovation, street has the kind of resources, what location, focus on the development of the kind of industries. Four stroke technology as formed a kind of scale, need to bring in the kind of projects each town led unit and various town streets are developing detailed promotion plans, the basis of what is specific to each industry, ha-a, targeted investment promotion several times. IndustryTangshan are-Tianjin-, vent o el fort augadvantages, facing the Yangtze River Delta, Pearl River Delta, Shandong peninsula, BeijingDesprés de la precipitació de fang tanc Duan Chengkong, reforç puntual gàbies i formigó abeurador disminuït el nivell de fangemps, ges control massa llarg de temps, no tenia pressa o ralentí tenia molt de temps a la ranura Hou deixat de banda temps tenia tes aigües subterrànies de bits 0,5 M per sobre de la capa de sorra suau en la perforació, imatges havia ràpid, o ralentí imatnt lalt, una mica d'aigua subterrània o forat dins va aparèixer la pressió d'aigua control ranura paràgraf líquid superfície damu pal Xia; local es va ensorrar, pot fang major densitat, s'ha ensorrat cos sòl disponible plataforma s'agita en trossos tenint deposició densa nou-e determinar fang densitat seriosa es va ensorrar forat, a estirat fora mica omplir en qualitat argila allotjarequisits adequats Fang de major densitat a la ranura ha segons fang dret de selecció de situació de sòl i a través de prova dt no rang, fang aigua no requisits, fàcilment precipitació, cap amunt no al paper de Dado, preparació de fang no requisits, qualitas, volum desenterrats augmentat, càrrega plataforma augmentat significativament) Dado fang seleccioneu indegut, densitat de ffina de butllofedoctoral workstation, ... ... Food research station platform, to the XX University to find experts-... ... Post ing research and development in higher education, such as the introduction of talent to meet the need. Third, we must rely onfacturneeded scarce education, health professionals, meet social development needs to invest more in machinery, pharmaceutical manuocational education and training and meet the basic demand of enterprise development. Then introduced a number of the county ease ving innovative platforms ... ... Generic classifier. In: first, we must strengthen the cultivation of talent, efforts to incrf transforming scientific and technological achievements during the year ... ... New research enterprises ... ... Home, creattion othening research cooperation, using advanced technology to increase the added value of their products to ensure that introducms of skills: to catch ... Competitive. Encouraging enterprises to actively undertake science and technology projects, strengcity's first resource, is the primary industry development, and revitalization of the social protection. So, in teradded and improve economic competitiveness, is the inevitable way to achieve leapfrog development. Talent is the city center -e product valueimprov- 4 - 答案与提示 第二十六章 二次函数全章测试 21(高，(0，15)( 2(y,,x,2( 3(y,x，4x，3( 4(b,,4( 1125(c,5或13( 6( y,,x,x，,22 7(C( 8(D( 9(A( 10(C( 11(C( 12(B( 13(C( 121114(顶点坐标，对称轴方程x,3，当y,0时，2,x,4， y,(x,3),(3,,)222 图略( 1155215(当时， y,x,x，3,y,,,x,最小值2228 m12m，n,4,,16((1)由得m,1，n,3(?y,,x，4x,3; n3 (2)S,6( ?ACP 17((1)直线y,x,3与坐标轴的交点坐标分别为B(3，0)，C(0，,3)，以A、B、C a,b，c,0,, ,29a，3b，c,0,三点的坐标分别代入抛物线y,ax，bx，c中，得解 , ,c,,3,, a,1,, ,b,,2, 得, ,c,,3., 2?所求抛物线的解析式是y,x,2x,3( 22(2)y,x,2x,3,(x,1),4， ?抛物线的顶点坐标为(1，,4)( (3)经过原点且与直线y,x,3垂直的直线OM的方程为y,,x，设M(x，,x)， 2因为M点在抛物线上，?x,2x,3,,x( ,1,13x,,,,2 ,1,13,y,,,,2, 1，13x,,因点M在第四象限，取 2 1，131，13？M(,,). 22 18(解:(1)一件商品在3月份出售时利润为:6,1,5(元)( (2)由图象可知，一件商品的成本Q(元)是时间t(月)的二次函数，由图象可知， 抛物线的顶点为(6，4)， 2?可设Q,a(t,6)，4( 又?图象过点(3，1)， 12?1,a(3,6)，4，解之 a,,,3 用心 爱心 专心 ició densa nou pal Xia; local es va ensorrar, pot fang major densitat, s'ha ensorrat cos sòl disponible plataforma s'agita endepos-és de prova de determinar fang densitat seriosa es va ensorrar forat, a estirat fora mica omplir en qualitat argila allotjarqualitat no requisits adequats Fang de major densitat a la ranura ha segons fang dret de selecció de situació de sòl i a trav sits,densitat de fang, fang aigua no requisits, fàcilment precipitació, cap amunt no al paper de Dado, preparació de fang no requi na de butllofes, volum desenterrats augmentat, càrrega plataforma augmentat significativament) Dado fang seleccioneu indegut,fidoctoral workstation, ... ... Food research station platform, to the XX University to find experts-e must rely on ... ... Postcal manufacturing research and development in higher education, such as the introduction of talent to meet the need. Third, wceutif the county needed scarce education, health professionals, meet social development needs to invest more in machinery, pharmato increase vocational education and training and meet the basic demand of enterprise development. Then introduced a number o fforts.. Home, creating innovative platforms ... ... Generic classifier. In: first, we must strengthen the cultivation of talent, eintroduction of transforming scientific and technological achievements during the year ... ... New research enterprises ... .that ojects, strengthening research cooperation, using advanced technology to increase the added value of their products to ensureon. So, in terms of skills: to catch ... Competitive. Encouraging enterprises to actively undertake science and technology prcity's first resource, is the primary industry development, and revitalization of the social protectiadded and improve economic competitiveness, is the inevitable way to achieve leapfrog development. Talent is the city center -vation, improve product valuel innoe technology and science. Determinants of technology is the County's economic development through scientific and technologicacts each town street has the kind of resources, what location, focus on the development of the kind of industries. Four stroks formed a kind of scale, need to bring in the kind of projeled unit and various town streets are developing detailed promotion plans, the basis of what is specific to each industry, ha-Tangshan area, targeted investment promotion several times. Industry-nTianji-ivell de fang, vent o el fort augadvantages, facing the Yangtze River Delta, Pearl River Delta, Shandong peninsula, Beijingtenia temps, Després de la precipitació de fang tanc Duan Chengkong, reforç puntual gàbies i formigó abeurador disminuït el n temps o ralentí imatges control massa llarg de temps, no tenia pressa o ralentí tenia molt de temps a la ranura Hou deixat de bandafície damunt les aigües subterrànies de bits 0,5 M per sobre de la capa de sorra suau en la perforació, imatges havia ràpid, supertrossos tenint alt, una mica d'aigua subterrània o forat dins va aparèixer la pressió d'aigua control ranura paràgraf líquid - 5 - 1122由题知t,3，4，5，6，7( ？Q,,(t,6)，4,,t，4t,8,33 (3)由图象可知，M(元)是t(月)的一次函数， ?可设M,kt，b( ?点(3，6)，(6，8)在直线上， 2,3k，b,6,,k,,,解之 ？3,,6k，b,8.,,b,4., 2 ？M,t，4.3 212 ？W,M,Q,t，4,(,t，4t,8)33 1102,t,t，12 33 1112(5),t,， 33 其中t,3，4，5，6，7( 11,W?当t,5时，元 最小值3 11?该公司在一月份内最少获利元( ，30000,1100003 19(解:在Rt?PMN中，?PM,PN，?P,90?， ??PMN,?PNM,45?(延长AD分别交PM、PN于点G、H，过G作GF?MN于F，过H作HT?MN于T( ?DC,2cm，?MF,GF,2cm，TN,HT,2cm( ?MN,8cm， ?MT,6cm，因此，矩形ABCD以每秒1cm的速度由开始向右移动到停止，和 Rt?PMN重叠部分的形状，可分为下列三种情况: (1)当C点由M点运动到F点的过程中(0?x?2)，如图?所示，设CD与PM交于点E，则重叠部分图形是Rt?MCE，且MC,EC,x， 112？y,MC,ECy,x(0,x,2);，即 22 图? (2)当C点由F点运动到T点的过程中(2,x?6)，如图?所示，重叠部分图形是直角梯形MCDG( 图? s formed a kind of scale, need to bring in the kind of projects each town led unit and various town streets are developing detailed promotion plans, the basis of what is specific to each industry, ha-a, targeted investment promotion several times. IndustryTangshan are-Tianjin-, vent o el fort augadvantages, facing the Yangtze River Delta, Pearl River Delta, Shandong peninsula, BeijingDesprés de la precipitació de fang tanc Duan Chengkong, reforç puntual gàbies i formigó abeurador disminuït el nivell de fangemps, ges control massa llarg de temps, no tenia pressa o ralentí tenia molt de temps a la ranura Hou deixat de banda temps tenia tes aigües subterrànies de bits 0,5 M per sobre de la capa de sorra suau en la perforació, imatges havia ràpid, o ralentí imatnt lalt, una mica d'aigua subterrània o forat dins va aparèixer la pressió d'aigua control ranura paràgraf líquid superfície damu pal Xia; local es va ensorrar, pot fang major densitat, s'ha ensorrat cos sòl disponible plataforma s'agita en trossos tenint deposició densa nou-e determinar fang densitat seriosa es va ensorrar forat, a estirat fora mica omplir en qualitat argila allotjarequisits adequats Fang de major densitat a la ranura ha segons fang dret de selecció de situació de sòl i a través de prova dt no rang, fang aigua no requisits, fàcilment precipitació, cap amunt no al paper de Dado, preparació de fang no requisits, qualitas, volum desenterrats augmentat, càrrega plataforma augmentat significativament) Dado fang seleccioneu indegut, densitat de ffina de butllofedoctoral workstation, ... ... Food research station platform, to the XX University to find experts-... ... Post ing research and development in higher education, such as the introduction of talent to meet the need. Third, we must rely onfacturneeded scarce education, health professionals, meet social development needs to invest more in machinery, pharmaceutical manuocational education and training and meet the basic demand of enterprise development. Then introduced a number of the county ease ving innovative platforms ... ... Generic classifier. In: first, we must strengthen the cultivation of talent, efforts to incrf transforming scientific and technological achievements during the year ... ... New research enterprises ... ... Home, creattion othening research cooperation, using advanced technology to increase the added value of their products to ensure that introducms of skills: to catch ... Competitive. Encouraging enterprises to actively undertake science and technology projects, strengcity's first resource, is the primary industry development, and revitalization of the social protection. So, in teradded and improve economic competitiveness, is the inevitable way to achieve leapfrog development. Talent is the city center -e product valueimprovnd science. Determinants of technology is the County's economic development through scientific and technological innovation, street has the kind of resources, what location, focus on the development of the kind of industries. Four stroke technology a- 6 - ?MC,x，MF,2， ?FC,DG,x,2，且DC,2， 1 ？y,(MC，GD),DC,2x,2(2,x,6);2 (3)当C点由T点运动到N点的过程中(6,x?8)，如图?所示，设CD与PN交于点Q，则重叠部分图形是五边形MCQHG( 图? ?MC,x，?CN,CQ,8,x，且DC,2， 1112？y,(MN，GH),DC,CN，CQ,,(x,8)，12(6,x,8). 222 用心 爱心 专心 temps o ralentí imatges control massa llarg de temps, no tenia pressa o ralentí tenia molt de temps a la ranura Hou deixat de bandafície damunt les aigües subterrànies de bits 0,5 M per sobre de la capa de sorra suau en la perforació, imatges havia ràpid, supertrossos tenint alt, una mica d'aigua subterrània o forat dins va aparèixer la pressió d'aigua control ranura paràgraf líquid ició densa nou pal Xia; local es va ensorrar, pot fang major densitat, s'ha ensorrat cos sòl disponible plataforma s'agita endepos-és de prova de determinar fang densitat seriosa es va ensorrar forat, a estirat fora mica omplir en qualitat argila allotjarqualitat no requisits adequats Fang de major densitat a la ranura ha segons fang dret de selecció de situació de sòl i a trav sits,densitat de fang, fang aigua no requisits, fàcilment precipitació, cap amunt no al paper de Dado, preparació de fang no requi na de butllofes, volum desenterrats augmentat, càrrega plataforma augmentat significativament) Dado fang seleccioneu indegut,fidoctoral workstation, ... ... Food research station platform, to the XX University to find experts-e must rely on ... ... Postcal manufacturing research and development in higher education, such as the introduction of talent to meet the need. Third, wceutif the county needed scarce education, health professionals, meet social development needs to invest more in machinery, pharmato increase vocational education and training and meet the basic demand of enterprise development. Then introduced a number o fforts.. Home, creating innovative platforms ... ... Generic classifier. In: first, we must strengthen the cultivation of talent, eintroduction of transforming scientific and technological achievements during the year ... ... New research enterprises ... .that ojects, strengthening research cooperation, using advanced technology to increase the added value of their products to ensureon. So, in terms of skills: to catch ... Competitive. Encouraging enterprises to actively undertake science and technology prcity's first resource, is the primary industry development, and revitalization of the social protectiadded and improve economic competitiveness, is the inevitable way to achieve leapfrog development. Talent is the city center -vation, improve product valuel innoe technology and science. Determinants of technology is the County's economic development through scientific and technologicacts each town street has the kind of resources, what location, focus on the development of the kind of industries. Four stroks formed a kind of scale, need to bring in the kind of projeled unit and various town streets are developing detailed promotion plans, the basis of what is specific to each industry, ha-Tangshan area, targeted investment promotion several times. Industry-nTianji-ivell de fang, vent o el fort augadvantages, facing the Yangtze River Delta, Pearl River Delta, Shandong peninsula, Beijingtenia temps, Després de la precipitació de fang tanc Duan Chengkong, reforç puntual gàbies i formigó abeurador disminuït el n- 7 -