浙教版八上数学作业本答案

浙教版八上数学作业本答案 参考答案第,章 平行线【,(,】,(?,，?,，?,，?, ,(,，,，,，,, ,(,,(?,与?,相等，?,与?,互补(理由略,(同位角是?,,,和?,,,，同旁内角是?,,, 和?,,,,(各,对(同位角有?, 与?,,,，?, 与?,,,，?, 与?,,,，?,与?,,,;内错角有?, 与?,,,，?, 与?, 与?,,,，?, 与?,,,;同旁内角有?, 与?,,,，?,与?,,,,，?, ,，?, 与?,,,，?,与?,,, 【,(,(,)】,((,),,，,, (,)?,，同位角相等，两直线平行 ,(略,(,,?,,，理由略 ,(已知，?,，,，同位角相等，两直线平行,(,与,平行(理由略,(,,?,,(理由如下:由,,，,,分别是?,,, 和?,,, 的角平分线，得?,,,,,,?,,,，?,,,, ,, ?,,,，则?,,,,?,,,，所以由同位角相等，两直线平行，得,,?,, 【,(,(,)】,((,),，,，内错角相等，两直线平行 (,),，,，内错角相等，两直线平行,(,,((,),?;，同位角相等，两直线平行 (,),?;，内错角相等，两直线平行(,),?,，因为?,，?,的对顶角是同旁内角且互补，所以两直线平行,(平行(理由如下:由?,,,,,,,?，?,,,,,,?，可得?,,,,,,?(所以?,,,，?,,,,,,,?，,,?,,(同旁内角互补，两直线平行),((,),,,?;,,;,,(,),, 与,,不一定平行(若加上条件?,,,,,,?，或?,，?,,,,?等都可说明,,?,,,(,,?,,(由已知可得?,,,，?,,,,,,,? ,(略 【,(,(,)】,(, ,(?,,,,?，?,,,,?，?,,,,,?,(?,,?,(理由如下:由?,,?,，得,,?,,(同位角相等，两直线平行)，? ?,,?,(两直线平行，同位角相等),(垂直的意义;已知;两直线平行，同位角相等;,,,(β,,,?( ? ,,?,,， ? α,β,((,)?,,?, (,)由,,，,,,,,,,,解得,,,,，所以?,,,,? 【,(,(,)】,((,)两直线平行，同位角相等 (,)两直线平行，内错角相等,((,)× (,)× ,((,),,, (,),,,,(? ?,,?,,,,,?， ? ,?,(内错角相等，两直线平行)(? ?,,?,,,,,?(两直线平行，同位角相等),(能(举例略,(?,,,,?,,,，?,,,(理由:连结,,，则?,,,，?,,,,,,,?(? ?,,,，?,,,,,,,?,?,,,,?,,,(,,((,),′,?,,(理由是?,,′,,?,,,,?,?,又?,,,,,,,?,?,,,,?,,,， ? ?,,,,?,,,，?,,,(,)由,′,?,,，得?,,,′,?,,,,,?( 【,(,】? ?,,,′,?,,,,,,?,,,′,,,?,(,第,章 特殊三角形,(,, 与,, 平行(量得线段,,的长约为,;,，所以两电线杆间的距离约为,,,, 【,(,】,(, ,;, ,(略,(由,?,，,,?,，,,?,，知,,,,,，?,,,,?,,,,,,?(,(,? ,,?,,， ? ?,,,,?,,,( ? ?,,,??,,,，,(,个;?,,,，?,,,，?,,,;?,,,;?,,,，?,;,,，,,;,,? ,,,,,,(,,;,，,,;,，,;, ,(,,或,,,(,,,,,(理由 如 下:作 ,, ?,,(如图，答案不唯一，图中点,,，,,，,,均可,于 ,，,, ?,,于 ,，则 ?,,, ??,,,，得,,,,,,((,)略 (,),,,, ,;,,(,, 平分?,,,(理由如下:由 ,, 是中线，得,along the ridge line on the plane, and nearly vertical slope contour lines, Guan Po changes with the original ground line, with shallow backfill-pipe, single-pipe water supply, the competent 1.4m, long 1063.506m, two asymmetric "y" pipe, diameter 0.8M, single 10m. Competent to establish 12 town Pier, 8 expansion joint. Town pier for the closed-end structure of gravity, placed on soft rock base surface, pipe concrete C20 on a pedestal. Pipe trench excavation slope 1:0.75, after the installation of steel tube, compacted gravel backfill material to the surface, and 1:100 slope drainage to gutters. Gutter width 0.5M depth 0.5m,M5 grouted rubble masonry. 9.2 main engineering content this standard pressure pipe and the metal structure installation part main including Yunnan province tengchong County yongxing River primary and secondary hydropower station in the of pressure pipe and the power station metal structure, which level power station pressure pipe total about 562t (containing annex); II level power station pressure pipe about 733 t (containing annex); level power station metal structure about 52.5 t, containing discharge Gate 2 hole, rushed sand Gate 1 hole, water mouth work door and the stopped dirt gate the 1 hole, Qian pool work door and the stopped dirt gate the 1 hole; Secondary power station metal junction at about 19.5 t, containing sand Gate 1 hole, water inlet water gate and trash the 1 hole; their auxiliary hoist equipment and electrical equipment. Concrete pressure pipe, gate, trash and hoisting device project property list 1-1~1-3. Table 1-1 the main characteristics of the penstock number item parameter type controller size head a long pipe diameter pipe length 11 hydropower station penstock open-air exposed pipe, single pipe joint water supply 1.3M 931m 0.8M 8.3*2m 22 hydropower station penstock open-air exposed pipe, single pipe joint water supply 1.4m 1063.506 m 0.8M 10*2m table 1-2 hydropower station Hydraulic metal structure main characteristics table number project name gate, and stopped dirt gate, and door (Gate) slot opening and closing machine track notes hole mouth size (wide x high) (MXM) number (sets) design head (m) supports type type single heavy (t) total heavy (t) type type opening and closing capacity (KN) head (trip) (m) number (sets) single heavy ,,复习 题 快递公司问题件快递公司问题件货款处理关于圆的周长面积重点题型关于解方程组的题及答案关于南海问题 ,,(又,,,,,，,,,,,，得?,,,??,,,(,,,)(,(,, ,((,)?, (,)?, (,)?, ? ?,,,,?,,,(第,题),((,)?,，两直线平行，同位角相等 【,(,】(,)?,，内错角相等，两直线平行(,)?,,,，,,，同旁内角互补，两直线平行,((,),,?，,,? (,),,,?，,,? ,(,，,,?，,,? ,(略,((,),,? (,),,?,(?,,,,?，?,,,,?，?,,,,,,?，?,, ,,,,,?，,,,,? ,(,,?或,,?,(,,?,,(理由:如图，由?,，?得,(,,,,,(理由:由,,,,,，得?,,,,?,,,((第又??,,,,?,?,,题) ?,,,,?,,,,,,?，,,,,,，? ?,,,??,,,(,,,)( ? ,,,,,,(由,,?,,，得?,,?,,,,,?(由,,?,,，得?,，?,,,,,?((本题也可用面积法求解)? ?,,,,?,(?,，?,,,,,?，?,，?,,,,,?，?,,?, 【,(,】,(不正确，画图略,(,,?，等腰 ,(, ,(,,?或,,?,(因为?,,,,?,,?,，所以,,?,,(所以?,,,,?,,,,?,(?,,,是等腰三角形(理由如下:由,,，,, 分别是?,,,，?,,, 的平,, 分线，得?,,,,?,,,(则,,,,, 【,(,(,)】,(?,,,,?,,,，,,,,,,,,(?,,, 和?,,,都是等腰三角形(理由如下:,(, ,(,,?，,,?，, ,(,? ?,,, 和?,,,重合， ? ?,,,,?,,,(,(? ?,，?,,,,?， ? ?,,,是直角三角形? ,,?,,， ? ?,,,,?,，?,,,,?,,,，,(由已知 ,,,,?，?,,,,,,?? ?,,?,,,( ? ,,,,,，即?,,可求得? ,是等腰三角形(,(,,?,,，,,,,,(理由如下:由已知可得?,,,??,,,，同理可知?,,,是等腰三角形? ,,,,,(?,,,,,,?， ? ?,,,,,,?(同理，?,,,,,,?，,((,)把,,,?分成,,?和,,,? (,)把,,?分成,,?和,,?? ?,,,,,,?，即,,?,, 【,(,】【,(,(,)】,((,), (,),,(, ,(,,? ,(?,,,,?，?,,,,? ,(,,,,,,,,,(?,,,是等边三角形(理由如下: ? ?,,,是等边三角形，? ?,,?,,?,,,,?( ? ,,?,,， ? ?,,,,?,,,,?，,(由,,,,,,,，,,,,,,,，得,,,,, ,(,,,,?,,,,?,,,,?，即?,,,,?,,,,?,,,,?,(略【,(,(,)】,((,),,?,,(因为?,,,,?,,,,,,?,((,), (,),, (,)槡, ,(,,,,,(,),,?,,(因为,,,,,，?,,,,?,,,,(由,,,,,,,,，得?,,,是等边三角形(则?,,,,,,?(而,,,,(作一个直角边分别为,;,和,;,的直角三角形，其斜边长为槡,;,,,， ? ?,,?,,,,,,?(同理可得?,,?,,,,,,?(,(槡, ,;,(或槡,;,) ,(,,,;,, ,(,,米? ?,,,,,,,?,(,梯形,,,′,′,,(,′,′，,,)?,,′,,(,，,),，,(?,,,是等边三角形(理由如下:由 ?,,,， ?,,,, ?,,,,,,?，,,?,,,,?,,,，得?,,,，?,,,,,,?( ? ?,,,,,,?(同理可,梯形,,,′,′,,?,,′,′，,?,,,′，,?,,,,,,，,,;,(得?,,,,,,?， ? ?,,,是等边三角形由,(,，,),,,,，,,(解答不唯一，如图,,;,，得,,，,,,;,【,(,(,)】,((,)不能 (,)能 ,(是直角三角形，因为满足,,,,,，,, ,(符合,(?,,,，?,,,，?,,,都是直角(第,题),(连结,,，则?,,,,,,?，,,,槡,,( ? ,,,，,,,,,,,，? ?,,,,,,?( ? ?,along the ridge line on the plane, and nearly vertical slope contour lines, Guan Po changes with the original ground line, with shallow backfill-pipe, single-pipe water supply, the competent 1.4m, long 1063.506m, two asymmetric "y" pipe, diameter 0.8M, single 10m. Competent to establish 12 town Pier, 8 expansion joint. Town pier for the closed-end structure of gravity, placed on soft rock base surface, pipe concrete C20 on a pedestal. Pipe trench excavation slope 1:0.75, after the installation of steel tube, compacted gravel backfill material to the surface, and 1:100 slope drainage to gutters. Gutter width 0.5M depth 0.5m,M5 grouted rubble masonry. 9.2 main engineering content this standard pressure pipe and the metal structure installation part main including Yunnan province tengchong County yongxing River primary and secondary hydropower station in the of pressure pipe and the power station metal structure, which level power station pressure pipe total about 562t (containing annex); II level power station pressure pipe about 733 t (containing annex); level power station metal structure about 52.5 t, containing discharge Gate 2 hole, rushed sand Gate 1 hole, water mouth work door and the stopped dirt gate the 1 hole, Qian pool work door and the stopped dirt gate the 1 hole; Secondary power station metal junction at about 19.5 t, containing sand Gate 1 hole, water inlet water gate and trash the 1 hole; their auxiliary hoist equipment and electrical equipment. Concrete pressure pipe, gate, trash and hoisting device project property list 1-1~1-3. Table 1-1 the main characteristics of the penstock number item parameter type controller size head a long pipe diameter pipe length 11 hydropower station penstock open-air exposed pipe, single pipe joint water supply 1.3M 931m 0.8M 8.3*2m 22 hydropower station penstock open-air exposed pipe, single pipe joint water supply 1.4m 1063.506 m 0.8M 10*2m table 1-2 hydropower station Hydraulic metal structure main characteristics table number project name gate, and stopped dirt gate, and door (Gate) slot opening and closing machine track notes hole mouth size (wide x high) (MXM) number (sets) design head (m) supports type type single heavy (t) total heavy (t) type type opening and closing capacity (KN) head (trip) (m) number (sets) single heavy ,,,,,,?第,章 直棱柱,((,),,,,，,,，,,，,(,)是直角三角形，因为(,,,,),，(,,),,(,,，,),【,(,】【,(,】,(直，斜，长方形(或正方形) ,(,，,,，,，长方形,(,,,,,或,,,,, 或?,,?,或?,,?, ,(略,(直五棱柱，,，,,，, ,(,,(全等，依据是“,,”,((答案不唯一)如:都是直棱柱;经过每个顶点都有,条棱;侧面都是长方形,(由?,,,??,,,，得,,,,,，?,,,，?,,,,,,?(,((,)共有,个面，两个底面是形状、面积相同的三角形，三个侧面都是形? ?,,,,,,?，即?,,,是等腰直角三角形状、面积完全相同的长方形,(? ?,,,,?,,,,,,?，又,,,,,，,,,,,，(,),条棱，总长度为(,,，,,);,? ,,?,,,?,,?,,,(,,)( ? ?,,,,?,,,，,(正多面体 顶点数(,) 面数(,) 棱数(,) ,，,,,? ,,,,,正四面体,(,,,,,,?,,(理由如下:由已知可得,,?,,,?,,?,,,，正六面体? ?,,?,，从而?,，?,,?,，?,,,,?,,,,,正八面体,,,,,复习题正十二面体,,,,,,,正二十面体,(,,,,,,,, ,(, ,(,, ,(,,或槡,,, ,(, ,(等腰符合欧拉公式,(,,?，,,?，, ,(槡, ,(,,?,,(? ,,,,,， ? ?,,,,?,,,， ? ?,,,,?,,,(【,(,】又? ,,,,,， ? ?,,,??,,,( ? ,,,,,,(,,,(, , ,(直四棱柱 ,(,，, ,,(,,,(连结,,( ? ,,,,,， ? ?,,,,?,,,(,((,),条 (,)槡, ,(,又? ?,,,,?,,,， ? ?,,,,?,,,( ? ,,,,,,( 表 关于同志近三年现实表现材料材料类招标技术评分表图表与交易pdf视力表打印pdf用图表说话 pdf 面展开图如图(它的侧面积是,,(,,(π, ,，,，,(,)×,,,,(;,,);,,(连结,,，则,,它的表面积是?,,,?,,?,,,， ? ?,,,,?,,,，从而,,,,,,,(,,,,,;,(?,,,,?,,,,?，,,,,,,,;,，,,,,,(,,，,,×, ,×,×,,,,(;,,)可得,,,,;,(在,,?,,,中，,,，,,,,(,,,,),，解得,,,,;,【,(,】(第,题),(?，?，?，? ,(,,, ,(圆柱圆锥球,(, ,(, ,(, ,(示意图如图从正面看长方形三角形圆,(, ,((,)面, (,)面, (,)面,从侧面看长方形三角形圆,,(蓝，黄从上面看圆圆和圆心圆,(, ,(示意图如图 ,(示意图如图,,(如图(第,,题)(第,题)第,章 样本与数据分析初步【,(,】 (第,(抽样调查,题)(第,题) ,(, ,(,,((,)抽样调查 (,)普查 (,)抽样调查【,(,】,(不合理，可从不同班级中抽取一定数量的男女生来调查,(立方体、球等 ,(直三棱柱 ,(,,( 方案 气瓶 现场处置方案 .pdf气瓶 现场处置方案 .doc见习基地管理方案.doc关于群访事件的化解方案建筑工地扬尘治理专项方案下载 多样(如在七年级各班中随机抽取,,名，在八年级各班中随机抽取,(长方体(, ,×,×, ,×,×,,,,(;,,) ,(如图,,名，再在九年级的各个班级中随机抽取,,名，然后进行调查，调查的问题可以是平均每天上网的时间、内容等【,(,】 ,(, ,(,，不正确，因为样本容量太小 ,(,,(,,,千瓦?时 ,(, ,,,题(第,题)(第,题),(小王得分,,×,，,,×,，,,×,,,,,,(分)(同理，小孙得,, ,分，小李得,(这样的几何体有,种可能(左视图如图,,分(小孙得分最高复习题【,(,】,(, ,(,,，,，,, ,(直三棱柱,(,，, ,(, ,(, ,(中位数是,，众数是,和,,, 数学八 年 级上,((,)平均身高为,,,;,, ,(平方环)(八年级二班投中环数的同学的投飞标技术比较稳定(,)这,,位女生的身高的中位数、众数分别是,,, ,;,，,,,;,,(从众数看，甲组为,,分，乙组为,,分，甲组成绩较好;从中位数看，两组(,)答案不唯一(如:可先将九年级身高为,,,;,的所有女生挑选出来成绩的中位数均为,,分，超过,,分(包括,,分)的甲组有,,人，乙组有作为参加方队的人选(如along the ridge line on the plane, and nearly vertical slope contour lines, Guan Po changes with the original ground line, with shallow backfill-pipe, single-pipe water supply, the competent 1.4m, long 1063.506m, two asymmetric "y" pipe, diameter 0.8M, single 10m. Competent to establish 12 town Pier, 8 expansion joint. Town pier for the closed-end structure of gravity, placed on soft rock base surface, pipe concrete C20 on a pedestal. Pipe trench excavation slope 1:0.75, after the installation of steel tube, compacted gravel backfill material to the surface, and 1:100 slope drainage to gutters. Gutter width 0.5M depth 0.5m,M5 grouted rubble masonry. 9.2 main engineering content this standard pressure pipe and the metal structure installation part main including Yunnan province tengchong County yongxing River primary and secondary hydropower station in the of pressure pipe and the power station metal structure, which level power station pressure pipe total about 562t (containing annex); II level power station pressure pipe about 733 t (containing annex); level power station metal structure about 52.5 t, containing discharge Gate 2 hole, rushed sand Gate 1 hole, water mouth work door and the stopped dirt gate the 1 hole, Qian pool work door and the stopped dirt gate the 1 hole; Secondary power station metal junction at about 19.5 t, containing sand Gate 1 hole, water inlet water gate and trash the 1 hole; their auxiliary hoist equipment and electrical equipment. Concrete pressure pipe, gate, trash and hoisting device project property list 1-1~1-3. Table 1-1 the main characteristics of the penstock number item parameter type controller size head a long pipe diameter pipe length 11 hydropower station penstock open-air exposed pipe, single pipe joint water supply 1.3M 931m 0.8M 8.3*2m 22 hydropower station penstock open-air exposed pipe, single pipe joint water supply 1.4m 1063.506 m 0.8M 10*2m table 1-2 hydropower station Hydraulic metal structure main characteristics table number project name gate, and stopped dirt gate, and door (Gate) slot opening and closing machine track notes hole mouth size (wide x high) (MXM) number (sets) design head (m) supports type type single heavy (t) total heavy (t) type type opening and closing capacity (KN) head (trip) (m) number (sets) single heavy 果不够，则挑选身高与,,,;,比较接近的,,人，故甲组总体成绩较好;从方差看，可求得,,甲,,,,(平方分)，,,乙,女生，直至挑选到,,人为止,,,(平方分)(,,甲,,,乙，甲组成绩比较稳定(波动较小);从高分看，高于,((,)甲:平均数为, ,年，众数为,年，中位数为, ,年;乙:平均数为, ,,,分的，甲组有,,人，乙组有,,人;其中满分人数，甲组也少于乙组(因年，众数为,年，中位数为,年此，乙组成绩中高分居多(从这一角度看，乙组成绩更好(,)甲公司运用了众数，乙公司运用了中位数,((,) ,甲,,,(;,)，,,甲,,(;,,);,乙,,,(;,)，,,乙,,,(;,,)((,)此题答案不唯一，只要说出理由即可(例如，选用甲公司的产品，因为,,它的平均数、众数、中位数比较接近，产品质量相对比较好，且稳定,,甲,,,乙，甲段台阶相对较平稳，走起来舒服一些(,)每个台阶高度均为,,;,(原平均数)，则方差为,，走起来感到平稳、【,(,】舒服,(, ,(, ,(, ,(,,,, ,(,,(中位数是,,,,元，众数是,,,,元(经理的介绍不能反映员工的月工资实,(乙组选手的表中的各种数据依次为:,，,，,，,(,，,,,(以下从四个方面给际水平，用,,,,元或,,,,元表示更合适出具体评价:?从平均数、中位数看，两组同学都答对,题，成绩均等;复习题?从众数看，甲比乙好;?从方差看，甲组成员成绩差距大，乙组成员成绩差距较小;?从优秀率看，甲组优秀生比乙组优秀生多,(抽样，普查 ,(方案?比较合理，因选取的样本具有代表性,((,),(平均数为,, ,岁，中位数和众数都是,,岁 ,(槡,平均数中位数众数标准差,(, , ,(, ,(, ,(, ,(,,，,,,,,年(万元), ,, ,, ,,(,,,(不正确，平均成绩反映全班的平均水平，容易受异常值影响，当有异常值，如几个,分时，小明就不一定有中上水平了(小明的成绩是否属于中,,,,年(万元), ,, ,, ,,,(,上水平，要看他的成绩是否大于中位数(,)可从平均数、中位数、众数、标准差、方差等角度进行分析(只要有道理即可)分;乙,,,分;丙,,,分，所以应录用乙(如从平均数、中位数、众数角度看，,,,,年居民家庭收入比,,((,)三人的加权平均分为甲,,,,,,,,,,,,,年有较大幅度提高，但差距拉大(,)甲应加强专业知识学习;丙三方面都应继续努力，重点是专业知识和工作经验【,(,】,,((,)表中甲的中位数是, ,，乙的平均数、中位数、投中,个以上次数分,(方差或标准差 ,(,,, ,((,), ,千克 (,),,,,,元别是,，,，,,(八年级一班投中环数的方差为,(平方环)，八年级二班投中环数的方差(,)从平均数、方差、中位数以及投中,个以上的次数等方面都可看出,, 甲的成绩较好，且甲的成绩呈上升的趋势【(,(,(,)】,)答案不唯一，只要分析有道理即可,(?? ,(,第,章 一元一次不等式,((,),,, (,),,,, (,)无数;如,,,，,槡, ,，,,,,等,【,(,】(,),? 槡, ,,((,),?, (,),,, ,(,,,(最小整数解为,,((,), (,), (,), (,), (,)?,((,),，,,, (,),,,,,, (,),，,?,, (,),,，,,?,,,,(共,组:,，,，,;,，,，,;,，,，, ,(,,,,,,((,), (,), (,), (,), (,),【,(,(,)】,(,((,),?, (,),,,, (,),,,(第,题),((,),,, (,),,,, ,((,),?, (,),,,,,(,,,((,),,，,,,,,,，,,,,(解不等式得,,,,(非负整数解为,，,，,，,(,)当,,,时，,,，,,,,,,,，,,，,,,,,,,，小霞的存款数没超过小明;当,,,时，,,，,,,,,,,，,,，,,,,,,,，小霞的存款数超过了小明,((,),,,,, (,),,,,【,((,)买普通门票需,,,元，买团体票需,,,元，买团体票便宜,(,】(,)设,人时买团体票便宜，则,,,,,,×,,×, ,，解得,,,,(所以,,,((,) (,)× (,) (,)along the ridge line on the plane, and nearly vertical slope contour lines, Guan Po changes with the original ground line, with shallow backfill-pipe, single-pipe water supply, the competent 1.4m, long 1063.506m, two asymmetric "y" pipe, diameter 0.8M, single 10m. Competent to establish 12 town Pier, 8 expansion joint. Town pier for the closed-end structure of gravity, placed on soft rock base surface, pipe concrete C20 on a pedestal. Pipe trench excavation slope 1:0.75, after the installation of steel tube, compacted gravel backfill material to the surface, and 1:100 slope drainage to gutters. Gutter width 0.5M depth 0.5m,M5 grouted rubble masonry. 9.2 main engineering content this standard pressure pipe and the metal structure installation part main including Yunnan province tengchong County yongxing River primary and secondary hydropower station in the of pressure pipe and the power station metal structure, which level power station pressure pipe total about 562t (containing annex); II level power station pressure pipe about 733 t (containing annex); level power station metal structure about 52.5 t, containing discharge Gate 2 hole, rushed sand Gate 1 hole, water mouth work door and the stopped dirt gate the 1 hole, Qian pool work door and the stopped dirt gate the 1 hole; Secondary power station metal junction at about 19.5 t, containing sand Gate 1 hole, water inlet water gate and trash the 1 hole; their auxiliary hoist equipment and electrical equipment. Concrete pressure pipe, gate, trash and hoisting device project property list 1-1~1-3. Table 1-1 the main characteristics of the penstock number item parameter type controller size head a long pipe diameter pipe length 11 hydropower station penstock open-air exposed pipe, single pipe joint water supply 1.3M 931m 0.8M 8.3*2m 22 hydropower station penstock open-air exposed pipe, single pipe joint water supply 1.4m 1063.506 m 0.8M 10*2m table 1-2 hydropower station Hydraulic metal structure main characteristics table number project name gate, and stopped dirt gate, and door (Gate) slot opening and closing machine track notes hole mouth size (wide x high) (MXM) number (sets) design head (m) supports type type single heavy (t) total heavy (t) type type opening and closing capacity (KN) head (trip) (m) number (sets) single heavy × (,) 人以上买团体票更便宜,((,)? (,)? (,)? (,)? (,)? (,)?【,(,(,)】,((,),,,,，不等式的基本性质, (,),?,,，不等式的基本性质,(,),?,，不等式的基本性质, (,),,,,，不等式的基本性质,(, ,(设能买,支钢笔，则,,?,,,，解得,?,,,,,,(所以最多能买,,支,(设租用,,座的客车,辆，则,,,，,,(,,,,)?,,,，解得,?,(所以,,,(,,,,，,,,,,,，, ,(,?,座的客车至多租,辆,(正确(设打折前甲、乙两品牌运动鞋的价格分别为每双,元，,元，则,(设加工服装,套，则,,,，,,?,,,,，解得,?,,,(所以小红每月至少加,工服装,,,套,×, ,,?, ,,,, ,,， ? ,,,?,,,,(设小颖家这个月用水量为,(,,)，则,×, ,，,(,,,)?,,，解得,?,, 数学 八 年 级上, ,,(至少为, ,,,,,,,,(所以商店应确定电脑售价在,,,,至,,,,元之间,((,),,,,,,,,,(设 该 班 在这 次 活 动 中 计 划 分 , 组，则,,，,,?,(,,,)，,解得,,，,,?,(,,,)，,，(,)设甲厂每天处理垃圾,时，则,,,,，,,,×,,,,,,,,?,?,(,(即 计划 项目进度计划表范例计划下载计划下载计划下载课程教学计划下载 分,个组，该班共有学生,,人,?,,,,，解得,,(设购买,型,台，,型(,,,,)台，则,,,?,,,，,,(,,,,)?,,,，解得?,(甲厂每天至少处理垃圾,时,?,?, ,(,可取,，,，,，有三种购买方案:?购 , 型,台，,型,,台;,((,)设购买钢笔,(,,,,)支时按乙种方式付款便宜，则?购,型,台，,型,台;?购,型,台，,型,台,,×,,，,(,,,,),(,,×,,，,,)×, ,，解得,,,,,((,),,,或,,,, (,),,?,?,(,)全部按甲种方式需:,,×,,，,×,,,,,,,(元);全部按乙种 ,,,,,,(元);先按甲种方式买,,台计算复方式需:(,,×,,，,×,,)×, 习题器，则商场送,,支钢笔，再按乙种方式买,,支钢笔，共需,,×,,，,×,,×, ,,,,,,(元)(这种付款方案最省钱,(,,,, ,(,;,,,,,,;, ,(,?, ,(,,【,(,(,)】,(,,,，,，,，, ,(,，,,((,),,,,,,, (,),，,,,?, (,),,,,,,,(, ,((,),,, (,),,,, (,),,?,,槡, (,)无解,((,),,,,((,),?,,, (,),,,, ,(无解 ,(,, (,),?,,,,(设从甲地到乙地的路程为,千米，则,,,,，,(,,,)?,,，解得,,,?,((,),,,,,,, (,),,(,,?,,,,(,, ,,(,?,,,(在,千米到,,千米之间，不包含,千米，包含,,千米,,(,,,,,,,((,),,,,?,, (,),,,(设小林家每月“峰电”用电量为,千瓦时，则, ,,,，, ,,(,,,,,)?, ,,×,,,，解得,?,,,(即当“峰电”用电量不超过,,,千瓦时使用“峰【,(,(,)】谷电”比较合算,,,,,,，烄,,(,?,,(,烅，解得,(,,,?, ,(,,或,,,,(设这个班有,名学生，则,,,(),,,，解得,,,,(,,,,,)×,?烆,,,,，,,,，,,? ,是,，,，,的倍数， ? ,,,,(即这个班共有,,名学生,(设小明答对了,题，则,,?,,?,,，解得,,,,?,?,,,,(所以小明答,,(设甲种鱼苗的投放量为,吨，则乙种鱼苗的投放量为(,,,,)吨，得对了,,题,,，,(,,,,)?,,,，,解得,,?,?,,，即甲种鱼苗的投放量应控制在,,，,,(,,,,)?,,,，,(设电脑的 售 价 定 为 , 元，则,,,,,,,,,,,，,解 得,,,,,,,,,,,?,,,,，,,,?,,吨到,,吨之间(包含,,吨与,,吨),, ,(略 ,(略 ,(, ,(如图第,章 图形与坐标【,(,(,)】【,(,】,(,(,,，,)，,(,，,)，,(,，,,)，,(,,，,,),(,,(,′(,，,)，,″(,,，,,) ,((,，,),((,)东(北)，,,,(,,,)，北(东)，,,,(,,,),(点,与,，点,与,的横坐along the ridge line on the plane, and nearly vertical slope contour lines, Guan Po changes with the original ground line, with shallow backfill-pipe, single-pipe water supply, the competent 1.4m, long 1063.506m, two asymmetric "y" pipe, diameter 0.8M, single 10m. Competent to establish 12 town Pier, 8 expansion joint. Town pier for the closed-end structure of gravity, placed on soft rock base surface, pipe concrete C20 on a pedestal. Pipe trench excavation slope 1:0.75, after the installation of steel tube, compacted gravel backfill material to the surface, and 1:100 slope drainage to gutters. Gutter width 0.5M depth 0.5m,M5 grouted rubble masonry. 9.2 main engineering content this standard pressure pipe and the metal structure installation part main including Yunnan province tengchong County yongxing River primary and secondary hydropower station in the of pressure pipe and the power station metal structure, which level power station pressure pipe total about 562t (containing annex); II level power station pressure pipe about 733 t (containing annex); level power station metal structure about 52.5 t, containing discharge Gate 2 hole, rushed sand Gate 1 hole, water mouth work door and the stopped dirt gate the 1 hole, Qian pool work door and the stopped dirt gate the 1 hole; Secondary power station metal junction at about 19.5 t, containing sand Gate 1 hole, water inlet water gate and trash the 1 hole; their auxiliary hoist equipment and electrical equipment. Concrete pressure pipe, gate, trash and hoisting device project property list 1-1~1-3. Table 1-1 the main characteristics of the penstock number item parameter type controller size head a long pipe diameter pipe length 11 hydropower station penstock open-air exposed pipe, single pipe joint water supply 1.3M 931m 0.8M 8.3*2m 22 hydropower station penstock open-air exposed pipe, single pipe joint water supply 1.4m 1063.506 m 0.8M 10*2m table 1-2 hydropower station Hydraulic metal structure main characteristics table number project name gate, and stopped dirt gate, and door (Gate) slot opening and closing machine track notes hole mouth size (wide x high) (MXM) number (sets) design head (m) supports type type single heavy (t) total heavy (t) type type opening and closing capacity (KN) head (trip) (m) number (sets) single heavy 标相等，纵坐 (,),,,标互为相反数,(,(,，,)，,(,，,)，,(,，,)(点,的坐标为(,，,,),((,)横排括号内依次填,，,，,，,，,;竖排括号内由下往上依次填,，,，,((,),(,，,)，,(,，,)，,(,，,)，它们关于(第,轴 对 称 的 点 的 坐 标 分 别为,题),，,，,((,)略,,，,)，(,,，,)，(,,，,)(,((,)星期一、星期三、星期四、星期五的最高气温分别记做(,，,,)，(,，,)，,)略(,，,,)，(,，,,);其中(,，,,)表示星期六的最高气温，这一天的最高,((,)略 (,), ,((,)略 (,)相同;相似变换气温是,,?【,(,(,)】(,)本周内，星期天的最高气温最高;由于冷空气的影响，星期一、二气温降幅最大,((,)右，, (,)(,,，,) (,)(,，,)(,?,?,) ,(略,(在(,，,)处落子,((,)把点,向下平移,个单位得到点,(,)把点, 向右平移,个单位，再向下平移,个单位得到点,【,(,(,)】(,)把点,向左平移,个单位，再向下平移,个单位得到点,,((,，,,)，,，, ,(, ,((,)平行 (,)平行(,)点(,,，,,)向右平移,个单位，再向上平移,个单位，得到点(,，,),((,),(,，,)，,(,,，,)，,(,，,) (,)略 (,)分别在一、二、三、四象限,((,)(,,，,，,) (,),,,((,)(,,，,) (,),,,,,(图略，,′，,′，,′的坐标分别为(,,，,)，(,，,)，(,，,),((,)训兽馆，海狮馆，鸟馆,((,),(,,，,,)，,(,,，,)，图略(,),代表“长颈鹿馆”(,，,)，, 代表“大象馆”(,，,)(,)将,, 向左平移,个单位，或以,轴为对称轴作一次对称变换,(图略(使点,变换后所得的三角形仍是等腰直角三角形的变换有:【,(,(,)】?把点,向下平移,个单位到点(,，,,);,(,,，(,,，,)?把点, 先向右平移,个单位，再向下平移,个单位到点(,，,,);,(过点,且垂直于,, 的直线为, 轴建立坐标系，,(,，,)，,(,，,)，,(,，?把点,向右平移,个单位到点(,，,);,)，,(,，,)?把点, 先向右平移,个单位，再向下平移,个单位到点(,，,);?把点,先向右平移,个单位，再向下平移,个单位到点(,，,,)数学 八 年 级上复习题,((,),,,,,,,,, (,),,,，表示汽车行驶,时后距离,地,,,,,,((,),，， (,)是 (,),,Ω,((,)四 (,)(,，,) (,), ,((,，,，,),((,)(从下至上),，,, (,),,,((,),,,，,,, (,),,,,，,,,,(,)是，因为风速随时间的变化而变化，且对于确定的时间都有一个确定,(图形略(直角三角形的风速,(图略，直线,上的点的纵坐标不变;向上平移,个单位后所得直线,′上任【,(,(,)】意一点的坐标表示为(,，,),(?, ,(光线从点,到点,所经过的路程是, ,,,((,),为任何实数 (,),?,,的任何实数,((,),(,，,,)，,(,，,)，,(,，,)，,(,，,,) (,),,,,(南偏东,,?方向，距离小华,,米,((,),,;, (,),,,(,,，,);,,,,((,)图略,((,),,,，,,，,,,,,, (,),,;,(,)图案?各顶点的坐标分别为(,,，,,)，(,,，,,)，(,,，,,)(,)不能，因为以,，,，,,为边不能组成三角形(,)?各顶点的横坐标、纵坐标分别互为相反数;??,,,绕原点旋转,((,),,,,，,?,?,, (,),,,,,,,?后，得到图案?,(,,,第,,,，,?,?,,,章 一次函数,((,),,,,槡，,，,,, (,),;, (,),;,【,(,】【,(,(,)】,(,，,;,,千米,时 ,(,，,;, ,,元,立方米,(,,，,;,,，,,;,,，,,(常量是,，变量是,，？,((,),,, ,,，是一次函数，也是正比例函数,(常量是,,，,,,，变量是,，,(,,岁需, ,时，,,岁需, ,时，,,岁需, ,时(,),,,,,,,,，是一次函数，但不是正比例函数,((,),，,是变量 (,),，,是变量 ,(,，,是变量，,是常量,((,),,,,, (,),, (,)along the ridge line on the plane, and nearly vertical slope contour lines, Guan Po changes with the original ground line, with shallow backfill-pipe, single-pipe water supply, the competent 1.4m, long 1063.506m, two asymmetric "y" pipe, diameter 0.8M, single 10m. Competent to establish 12 town Pier, 8 expansion joint. Town pier for the closed-end structure of gravity, placed on soft rock base surface, pipe concrete C20 on a pedestal. Pipe trench excavation slope 1:0.75, after the installation of steel tube, compacted gravel backfill material to the surface, and 1:100 slope drainage to gutters. Gutter width 0.5M depth 0.5m,M5 grouted rubble masonry. 9.2 main engineering content this standard pressure pipe and the metal structure installation part main including Yunnan province tengchong County yongxing River primary and secondary hydropower station in the of pressure pipe and the power station metal structure, which level power station pressure pipe total about 562t (containing annex); II level power station pressure pipe about 733 t (containing annex); level power station metal structure about 52.5 t, containing discharge Gate 2 hole, rushed sand Gate 1 hole, water mouth work door and the stopped dirt gate the 1 hole, Qian pool work door and the stopped dirt gate the 1 hole; Secondary power station metal junction at about 19.5 t, containing sand Gate 1 hole, water inlet water gate and trash the 1 hole; their auxiliary hoist equipment and electrical equipment. Concrete pressure pipe, gate, trash and hoisting device project property list 1-1~1-3. Table 1-1 the main characteristics of the penstock number item parameter type controller size head a long pipe diameter pipe length 11 hydropower station penstock open-air exposed pipe, single pipe joint water supply 1.3M 931m 0.8M 8.3*2m 22 hydropower station penstock open-air exposed pipe, single pipe joint water supply 1.4m 1063.506 m 0.8M 10*2m table 1-2 hydropower station Hydraulic metal structure main characteristics table number project name gate, and stopped dirt gate, and door (Gate) slot opening and closing machine track notes hole mouth size (wide x high) (MXM) number (sets) design head (m) supports type type single heavy (t) total heavy (t) type type opening and closing capacity (KN) head (trip) (m) number (sets) single heavy ,,,,【,(,(,)】,((,),,,,,,,，,,,,, (,),,,,,,(,,(,，, ,,,),;,,,,;存入银行,,,,元，定期一年后可得本息和为,((,),,, ,,,，,, (,),,元，,,,元,,,,元,((,),,,,(,,，,, (,),(,? (,),,,,((,)是 (,),,(,,元;,,(,元;,,,(,元,((,)瓜子质量, (,),, , ,((,),, (,),, (,),,((,),(,,;,,,(,, (,),,,, 【,(,(,)】,((,),,,,,,，,,, (,),,,,元,((,),,,,,，,, (,),,, ,(,,;,,, ,(,,((,)当,?,?,时，,,, ,,;当,,,时，,,, ,,,, ,(,((,),,,,，,，,为任何实数 (,), (,),,,,,), ,元,立方米，, ,元,立方米 (,),立方米,,(,,，,,,((,),,,,,，,,, (,)不配套【,(,(,)】,((,),,;, (,),,,,,，, (,),,张,,,，,((,)可用一次函数来描述该山区气温与海拔的关系(,,,,,(,,,,，,,,,,(,),,,?,?,,,,((,), (,),，,, (,),,千米 (,),,,,, (,),,,,,,,,【,,,,(,(,)】,(,(近似值也可),,,,((,)(,，,);(,，,) (,),, (,)一，三;一，三，四 ,(,,((,),;, (,), (,),,,, (,),,,,，, (,),,,(包括,和,),((,),,,,,，, (,)不在 ,(图略,(设参加人数为,人，则选择甲旅行社需游费:,,,×,,,,,,,,,(元)，选择,((,),,,,,,,，,,,,, (,)图略乙旅行社需游费:,,,×,,,(,,,),(,,,,,,,,)(元)(当,,,,,,,,,,,((,),,,,,，,(,,;,,,,(,, (,)略,,,时，,,,,(故当,,?,,,,时，选择乙旅行社费用较少;当人数,,,,(,)(,,,，,,,)(当通话时间为,,,分时，两种方式的每月话费都为,,,元时，两家旅行社费用相同;当,,,,?,,时，选择甲旅行社费用较少,((,)不过第四象限 (,),,,课题学习【,(,(,)】方案一，废渣月处理费,,,, ,,,，,,，方案二，废渣月处理费,,,, ,,(,(, ,(,,,,,, ,(,,,,,处理费用越高，利润越小，因此应选择处理费用较低的方案(当产品的月生产,((,),(,，,,) (,),,，()量小于,,,件时应选方案二;等于,,,件时两方案均可，大于,,,件时，选方,, ，,,,,案一,((,),,,,万,, (,),,天,((,),,,,,,,,,,,,,,复习题(,)方案为, 型车厢,,节，,型车厢,,节，总运费为,,,,,,元,(,，，( ),;(,，,)【,;,(,,,,,,,;,,, ,,,,;,,(, ,(在 ,(,,(,(,)】,,(,,, ,, ,(如,,,,，,等,(,?, ,(, ,(, ,((,),,,,,, (,),,,,，,,, ,(,,,(,,，,,(,?,?,,)，图略 ,(,,,,,,,,，,,,,，, ?,,((,), (,),,,,，,, (,),,个,(,,，,,,,,,(,( ?,,((,),,,,,，,, (,),,,,,, (,),(,，,)由?，得 ,,,(,,,(,,( ?,,((,),,分 (,),,千米 (,),,分把?代入?，得 ,，,(,,,(,,,,,，解得,,,(又由,?,,且为整数，得,,,，或,,,,(总复习题把,,,代入?，得 ,,,(,;把,,,,代入?，得,,, ,(所以饼干的标价为每盒,(,,元，牛奶的标价为每袋,(,元;或饼干的标价 ,(, ,(, ,(, ,(, ,(, ,(,为每盒,(,,,,元，牛奶的标价为每袋, ,元 ,(,, ,,(,,,, ,,(,,?,,(等腰三角形底边上的中线、顶角的平分线和底边上的高互相重合;直角,,(,三角形斜边上的中线等于斜边的一半;等边对等角;,,((,),,,,元?,,,;内错角相等，两直线平行(,)印刷费为(,(,×,，,(,×,)along the ridge line on the plane, and nearly vertical slope contour lines, Guan Po changes with the original ground line, with shallow backfill-pipe, single-pipe water supply, the competent 1.4m, long 1063.506m, two asymmetric "y" pipe, diameter 0.8M, single 10m. Competent to establish 12 town Pier, 8 expansion joint. Town pier for the closed-end structure of gravity, placed on soft rock base surface, pipe concrete C20 on a pedestal. Pipe trench excavation slope 1:0.75, after the installation of steel tube, compacted gravel backfill material to the surface, and 1:100 slope drainage to gutters. Gutter width 0.5M depth 0.5m,M5 grouted rubble masonry. 9.2 main engineering content this standard pressure pipe and the metal structure installation part main including Yunnan province tengchong County yongxing River primary and secondary hydropower station in the of pressure pipe and the power station metal structure, which level power station pressure pipe total about 562t (containing annex); II level power station pressure pipe about 733 t (containing annex); level power station metal structure about 52.5 t, containing discharge Gate 2 hole, rushed sand Gate 1 hole, water mouth work door and the stopped dirt gate the 1 hole, Qian pool work door and the stopped dirt gate the 1 hole; Secondary power station metal junction at about 19.5 t, containing sand Gate 1 hole, water inlet water gate and trash the 1 hole; their auxiliary hoist equipment and electrical equipment. Concrete pressure pipe, gate, trash and hoisting device project property list 1-1~1-3. Table 1-1 the main characteristics of the penstock number item parameter type controller size head a long pipe diameter pipe length 11 hydropower station penstock open-air exposed pipe, single pipe joint water supply 1.3M 931m 0.8M 8.3*2m 22 hydropower station penstock open-air exposed pipe, single pipe joint water supply 1.4m 1063.506 m 0.8M 10*2m table 1-2 hydropower station Hydraulic metal structure main characteristics table number project name gate, and stopped dirt gate, and door (Gate) slot opening and closing machine track notes hole mouth size (wide x high) (MXM) number (sets) design head (m) supports type type single heavy (t) total heavy (t) type type opening and closing capacity (KN) head (trip) (m) number (sets) single heavy ×,,,,,,,,,,(元)，总费用为,,,,,，,,,,,,,,,,(元),,(,,?,,, ,,(图略 ,,(, ,,(,(,)设印数为,千册(,,(由已知可得,,?,,,?,,?,,,(,,)，得?,,?,(所以?,,,是?若,?,,,，由题意，得,,,,×(,(,×,，,(,×,),，,,,,?等腰三角形,,,,,，解得,?,(,( ? ,?,?,(,;,,(,,米 ,,(, ,,(, ,,(, ,,(, ,,(, ,,(,?若,?,，由题 意，得 ,,,,× (,(,×,，,(,×,),，,,,,?,,,,,，解得,?,(,,( ? ,?,?,(,,(,,((,),(,，槡,) (,)槡,,,综上所述，符合要求的印数,(千册)的取值范围为,?,?,(,或,,(设饼干的标价为每盒,元，牛奶的标价为每袋,元，则,?,?,(,, along the ridge line on the plane, and nearly vertical slope contour lines, Guan Po changes with the original ground line, with shallow backfill-pipe, single-pipe water supply, the competent 1.4m, long 1063.506m, two asymmetric "y" pipe, diameter 0.8M, single 10m. Competent to establish 12 town Pier, 8 expansion joint. Town pier for the closed-end structure of gravity, placed on soft rock base surface, pipe concrete C20 on a pedestal. Pipe trench excavation slope 1:0.75, after the installation of steel tube, compacted gravel backfill material to the surface, and 1:100 slope drainage to gutters. Gutter width 0.5M depth 0.5m,M5 grouted rubble masonry. 9.2 main engineering content this standard pressure pipe and the metal structure installation part main including Yunnan province tengchong County yongxing River primary and secondary hydropower station in the of pressure pipe and the power station metal structure, which level power station pressure pipe total about 562t (containing annex); II level power station pressure pipe about 733 t (containing annex); level power station metal structure about 52.5 t, containing discharge Gate 2 hole, rushed sand Gate 1 hole, water mouth work door and the stopped dirt gate the 1 hole, Qian pool work door and the stopped dirt gate the 1 hole; Secondary power station metal junction at about 19.5 t, containing sand Gate 1 hole, water inlet water gate and trash the 1 hole; their auxiliary hoist equipment and electrical equipment. Concrete pressure pipe, gate, trash and hoisting device project property list 1-1~1-3. Table 1-1 the main characteristics of the penstock number item parameter type controller size head a long pipe diameter pipe length 11 hydropower station penstock open-air exposed pipe, single pipe joint water supply 1.3M 931m 0.8M 8.3*2m 22 hydropower station penstock open-air exposed pipe, single pipe joint water supply 1.4m 1063.506 m 0.8M 10*2m table 1-2 hydropower station Hydraulic metal structure main characteristics table number project name gate, and stopped dirt gate, and door (Gate) slot opening and closing machine track notes hole mouth size (wide x high) (MXM) number (sets) design head (m) supports type type single heavy (t) total heavy (t) type type opening and closing capacity (KN) head (trip) (m) number (sets) single heavy