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函数w=1/z，把z平面上x=1曲线映射成w平面上怎样的曲线
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函数w=1/z，把z平面上x=1曲线映射成w平面上怎样的曲线
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为偶函数（关于y轴对称），考查函数图像的折线连接点关于y轴的对称性，必有以下三种情况：1).
b+1 = -(b-1), b+a=0
此时， b =0; a=0;2).
b+1 = -(b+a)
此时：b =1; a= -3;3)
b-1 = -(b+a)
此时：b =-1; a= 3;因此a的取值集合为{-3,0,3}。详细解答过程如下图所示（点击放大图片）。
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您可能有同感的问题正在阅读：十款金牌电源年度横评：谁是最强看了便知！十款金牌电源年度横评：谁是最强看了便知！
1十款金牌电源五项严苛性能测试　　【PConline 横评】一开始叫我今年又搞电源横评的时候，其实我是拒绝的。因为，你不能让我搞，我就马上去搞，首先我要确定一个主题，因为我不想像某些媒体一样，杂七杂八把电源堆在一起然后对比就完事，这样网友出来一定会骂我，不同功率不同认证的电源放在一起根本没可比性，横评完也没什么意义。而我发现这两年金牌电源很火，而左右功率的电源现在也很主流，我感觉这个方向还不错，就决定这次年度电源横评就以这个为主题。这次横评我继续以往公平公正的态度去进行，绝不加任何特技上去，因为我要让网友看到，我测试的时候是这个样子，你们用的时候也会是这个样子！　　经过一周的时间，终于将各个部分的数据比分处理好，而且也准备好呈现给期待已久的各位网友了。最重要的是很多朋友看了上周的横评前瞻，十分心急自己到底能不能得到航嘉送出的奖品&&冷静王钻石2.31经典版呢？结果即将公布，在此之前，或许有些网友对本次的评测项目细则不是很清楚，没关系，下方小编将为大家增设传送门：本次进行参测的金牌电源共有十款，具体参测的电源产品及评测项目公布请点击下方链接：&各部分测试成绩公布电源性能稳定性测试：20分十款金牌电源+12V，+3.3V以及+5V最大偏离值（越小越好）以及综合得分（越高越好）：产品型号+12V+5V+3.3V综合得分航嘉 MVP K6501.16%2.2%3.33%16.66GAMEMAX 碳金600W1.25%2.2%3.03%16.14鑫谷 GP700G黑金全模版0.5%1.6%3.33%17.04先马 金牌650W模组版1.92%3.2%3.33%14.82长城 金牌巨龙GW-6800（90+）1%3%3.64%15.68Tt DPS G RGB 650D1.75%4.54%4%13.98大水牛 金牛7501.17%4.84%4.4%14.22振华 LEADEX 650W0.92%0.8%2.42%17.46海韵 X650W1%0.3%0.4%18.65银欣 ST65F-G1%3.8%2.42%15.88（PS：有部分电源采用双路+12V电路输出，其数值取双电路满载电压平均值）　　测试小结：本次参选的十款金牌电源在+12V，+3.3V以及+5V的表现均属于最大偏离值5%合格线之内，而且它们在+12V的表现均控制在2%以内的优秀水平，可见各款金牌电源对这重要的+12V把控都十分严谨。针对3路的偏离值表现，编辑给予了上述的综合得分。而在此部分测试中成绩最为优异的是海韵 X。纹波测试：20分十款金牌+12V，+3.3V以及+5V满载纹波值（越小越好）以及综合得分（越高越好）：产品型号+12V+5V+3.3V综合得分航嘉 MVP K65039mV23mV21mV15.99GAMEMAX 碳金600W47mV43mV38mV15.64鑫谷 GP700G黑金全模版29mV32mV29mV16.16先马 金牌650W模组版43mV36mV32mV14.15长城 金牌巨龙GW-6800（90+）40mV24mV22mV15.76Tt DPS G RGB 650D29mV27mV24mV16.73大水牛 金牛75046mV39mV25mV14.03振华 LEADEX 650W21mV17mV20mV18.46海韵 X650W19mV17mV19mV18.75银欣 ST65F-G31mV26mV18mV16.91　　测试小结：本次参选的十款产品在+12V，+3.3V以及+5V的纹波表现均不超过50mV，由此可见参选的这十款产品在纹波此部分的测试中都表现不错。根据此部分测试的表现，编辑给予了上述的综合得分。而在此部分测试中成绩最为优异的是海韵 X650W，综合得分为18.75分，而与此接近的是振华&LEADEX 650W，得分为18.46分。（PS：有部分电源采用双路+12V电路输出，其数值取双电路满载纹波平均值）：20分十款金牌电源20%，50%以及100%转换效率（越高越好）以及综合得分（越高越好）：产品型号20%50%100%综合得分航嘉 MVP K65089.36%90.68%88.43%16.46GAMEMAX 碳金600W88.38%90.15%87.55%15.69鑫谷 GP700G黑金全模版89.76%91.75%89.55%17.35先马 金牌650W模组版90.03%90.70%88.21%16.64长城 金牌巨龙GW-6800（90+）89.52%90.84%87.46%16.46Tt DPS G RGB 650D89%91.4%88.33%16.57大水牛 金牛75087.02%90.45%87.63%15.37振华 LEADEX 650W88.40%90.71%88.45%16.19海韵 X650W88.93%92.09%90.29%17.43银欣 ST65F-G87.5%91%87.95%15.81　　测试小结：由于此次参加测试的电源均为金牌电源，而测试结果意料之中也与认证标准一致，十款产品在20%，50%以及100%负载下的转换效率都分别超过87%、90%和87%。根据十款产品的转换效率表现，编辑给予了上述的综合得分。而在此部分测试中成绩最为优异的是海韵 X650W，综合得分为17.43分，与此十分接近的是鑫谷 GP700G黑金全模版，综合得分为17.35分，相当接近。功率与价格比：20分十款金牌以及售价和综合得分（越高越好）：产品型号额定功率电商售价综合得分航嘉 MVP K650650W599元16.48GAMEMAX 碳金600W600W359元18.46鑫谷 GP700G黑金全模版600W459元17.44先马 金牌650W模组版650W479元17.62长城 金牌巨龙GW-6800（90+）650W469元17.68Tt DPS G RGB 650D650W1059元12.28大水牛 金牛750650W379元18.52振华 LEADEX 650W650W699元15.58海韵 X650W650W699元15.58银欣 ST65F-G650W699元15.58（PS：上述电商售价均来自京东或天猫上的真实售价，此价格在12月20日采集）　　测试小结：本次参选的十款产品额定功率在~650W的区间内，但每款电源因应定位不同价格也不同。对于消费者而言，用最少的钱买到最高的额定功率当然是最好的。从上表的数据，综合得分最高的是 金牛750，此款产品的额定功率为65，而价格仅低至379元，同时此款产品拥有半模组设计及80 Plus金牌认证，价格优势明显。内部用料以及模组设计：15分+5分（共20分）十款金牌电源内部图一览本次参加横评产品内部结构航嘉 MVP K650GAMEMAX 碳金600W鑫谷 GP700G黑金全模版先马 金牌650W模组版长城 金牌巨龙GW-6800（90+）Tt&DPS G RGB 650D大水牛 金牛750振华 LEADEX 650W海韵 X-650W银欣&ST65F-G　　根据上述十款电源的用料，编辑对此分别给予不同的得分，编辑审核标准包括主电容，滤波电容的品牌以及容量，MOS管的品牌，电路方案等因素。十款金牌用料、模组设计总得分（越高越好）产品型号内部用料综合得分模组类型模组设计得分综合得分航嘉 MVP K65012.5半模315.5GAMEMAX 碳金600W11.5无011.5鑫谷 GP700G黑金全模版12.5全模517.5先马 金牌650W模组版12全模517长城 金牌巨龙GW-6800（90+）12半模315Tt DPS G RGB 650D13.5全模518.5大水牛 金牛75012.5半模317.5振华 LEADEX 650W14全模519海韵 X650W14全模519银欣 ST65F-G13.5全模518.5　　测试小结：此部分振华 LEADEX 采用日系日化主电容，德国英飞凌MOS管，美国泰科继电器等出色用料，再搭配全模组的设计；而海韵 X650W采用日系电容，高导电镀金端子等高端用料，且从图中可见两款电源的内部元件相当紧凑密集，因此在此部分此两款电源均获得了19分的高分。2年度电源最强者究竟是谁？PConline电源年度横评结果总结　　经过上述五项严苛的测试数据，大家应该对这十款金牌电源的各方面性能十分清楚。综合五项测试的结果，我们决定将三个奖项给予下列三款优秀的电源产品，接下来，让小编为大家揭晓吧！2016年度电源最强者： X　　&X拥有优秀的用料，而性能如上述测试成绩可见荣获多项第一。在五个测试部分的成绩分别为：18.65+17.43+18.75+15.58+19，总分为89.41分，所以&X是2016年度最佳电源产品，也就是本年度的电源最强者。最受玩家喜爱电源： MVP K650　　作为国内知名电源品牌的领航者&&航嘉一直拥有良好的口碑。在上周横评前瞻的评论区中涌现出很多热捧航嘉 MVP K650的真粉。虽然在此次横评中，此款电源未能获得第一的宝座，但其实它综合得分并不低，再加上航嘉这一品牌光环，绝对是当之无愧的最受玩家喜欢的电源产品。最具性价比电源： 金牌650模组版　　先马作为国内知名的机电品牌，无论是在电源领域还是机箱领域都得到极高的销量及口碑，而这款先马 24K金牌系列电源更是其品牌中的明星产品。此款先马 金牌650W模组版获得80 Plus金牌认证及全模组设计，而在金牌全模组电源当中，它的性价比是当中最高。因此，先马 金牌650W是本次年度横评中最具性价比的电源产品。小编最后说几句　　很高兴，此次年度横评到这里即将结束了，其实搞这个横评，小编的确花了很多的时间去测试以及处理数据。无论从上周的前瞻还是上年的年度电源横评中可见，不少网友质疑我们网站的公平性。对于你们的质疑，我加噜噜控制不了，但我只能保证的是用真实数据去说话，给予支持我们网站的网友一个最客观最有用的评测，我才是我加噜噜的出发点所在。好了，话说完了，又是时候公布上周前瞻文章下评论的得奖网友了：得奖网友　　从前瞻的评论中看到，有很多网友支持航嘉 MVP K650与振华 LEADEX 650W，但很可惜的是，你们都猜错了。恭喜这位网友获得了航嘉送出的航嘉&冷静王钻石2.31经典版电源一枚，迟一些，我们将会有人联系你的了。　　最后，谢谢大家的支持，今年的年度横评就到这里，我们下年再见了！3十款金牌电源产品介绍十款参测金牌电源产品介绍● MVP K650　　&MVP K650只为而来，为高端游戏玩家所精心打造的专属装备，电源&为，采用单路12V输出设计，单路输出可达648W，满足高端游戏平台配置的负载需求，并且拥有半模组设计，平台扩展升级毫无压力，而且航嘉 MVP K650还通过80PLUS金牌认证，拥有极高的能耗转换率。●GAMEMAX 碳金　　GAMEMAX 碳金600W首创在电源侧板使用双渐变呼吸灯模式，颠覆了电源不发光的历史。GAMEMAX 碳金600W除了拥有亮骚的外观，还拥有卓越的性能。此款电源获得了80 PLUS金牌认证，超过90%，全台系电容保障电源的稳定性，14CM保障电源强劲的散热效果。●鑫谷 GP700G黑金全模版　　鑫谷 GP700G黑金全模版比起鑫谷 GP700G黑金版（非模组版本）效能以及稳定上都有所提高，就而言，最高超过92%。鑫谷 GP600G黑金全模版同比上一代非模组版本无论是性能上还是线材上都有所提升，此款电源价格也不高，相信在市场上也有一定的杀伤力。● 金牌模组版　　先马24K金牌650W模组版除了拥有全模组设计外，在内部用料上仍秉承着使用了高规格的碳化硅二极管，承兴A+级主电容，Capxon固态电容等精良用料。而在电路设计上则采用了LLC谐振电路以及DC to DC设计，使电源的大大提升。●长城 金牌巨龙GW-6800（90+）　　长城巨龙GW-6800额定功率为600W，采用独立双+12V输出设计，完美支持双卡交火，通过80 Plus金牌认证，转换效率达到90%以上。●Tt&DPS G RGB 650D　　Tt&DPS G RGB 650D拥有80Plus 金牌认证以及个性化的RGB光效，采用优良的电路设计和高质量元件用料，具备额定650W的高效稳定输出能力，并且拥有高可玩性和实用性的模组化接口设计，具备优异的电压调节和，很适合注重节能效率与装机的中高端玩家。● 金牛750　　大水牛金牛750金牌电源，从外观来看，扎实稳重。大面积的网面保障了出色的散热效果，14cm静音风扇是控噪的根源。650W的功率定位自然是高端人群，金牌认证，有着超过90%的转化效率，更加的节能省电。●振华 LEADEX 650W　　振华 LEADEX 650W全白色的外观，为电源增添不少颜值。除了外观出众，电源采用日系用料，强大的用料致使电源拥有强大性能。电源获得了80 PLUS金牌认证，超过90%，全模组设计令玩家自由度更大。● X-650W　　海韵 X-650采用主流的黑色外观设计，配备有1个24/20pin的主板供电接口、1个8/4pin的CPU供电接口、1个FDD供电接口、10个SATA供电接口以及4个8/6pin的PCI-E供电接口，供电扩展能力不错。另外还采用有全日系电容，有效提高电源的稳定性。●&ST65F-G　　&ST65F-G采用获得80 Plus金牌认证以及备受玩家喜欢的全模组设计。在用料上，电源采用性能优秀的日系用料，性能自然不俗了。
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Acer Predator XB271HU 27" WQHD IPS NVIDIA G-Sync Black/Red Gaming Monitor, 2560 x 1440 (2K), 144 Hz w/ Overclocking to 165 Hz, Tilt/Swivel/Pivot/Height Adjustable, Build in Speakers
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2560 x 1440 (2K) (native and maximum) Resolution
4ms (GTG) response time, 144 Hz
144 Hz (OverClocking to 165 Hz) - Using Display Port
Signal Inputs: Display Port & HDMI 1.4 Port
G-Sync (NVIDIA Adaptive Sync)
HDMI, Display port and USB 3.0 x 4
VESA Mountable
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Learn more about the Acer America XB271HU (UM.HX1AA.001)
ModelBrandAcerSeriesPredator XB1ModelXB271HU (UM.HX1AA.001)Cabinet ColorBlackUsageConsumerDisplay27"YesYes2560 x 1440 (2K)144 Hz Native (Overclocked to 165 Hz)178° (H) / 178° (V)16.7 Million350 cd/m2ACM 100,000,000:1 (1,000:1)16:9IPSDisplay TypeWQHDAdaptive Sync TechnologyG-Sync (NVIDIA Adaptive Sync)ConnectivityInput Video CompatibilityDigitalConnectorsHDMI, DisplayPort11USB 3.04PowerComplies withENERGY STAR, MPR II, RoHSConvenienceStand AdjustmentsTilt: -5 to 35 DegreeSwivel: +/- 60 DegreeHeight Adjustment: 150mmPivot: YesBuilt-in Speakers2 x 2WVESA Compatibility - Mountable100 x 100mmDimensions & WeightDimensions (H x W x D)15.80" - 21.70" x 24.20" x 10.60" (with Stand)Weight17.60 lbs.PackagingPackage ContentsPredator XB271HU Widescreen LCD Monitor1 x Displayport Cable1 x HDMI CablePower Cord1 x USB 3.0 Cable
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and . Please accept if you wish to continue with third-party features. Thank you.宜宾 产品标准号Q/.2-60%vol-500ml-浓香型白酒的价格
答案长度必须超过10个字，请勿发布无效或违法言论。
（共有1个回答）
应该是五粮液，估计价格在六百多!
宜宾五粮液高档白酒-、五粮液尊酒珍品52度500毫升 &598.00/瓶 你的是38度的可能就300-400左右吧
查看原帖&&g
人民币五百上下
300-500之间
扫一下条码
这个酒治不了多少钱的，最多100元，茅台镇主要以产酱香型就为主
图片这款中国名酒苏酒具有无色透明、香气纯正、味醇尾净等浓香型大曲酒的特有风格，其特点为窖香浓郁、绵甜甘冽、香味协调、尾净余长的基础上，香更浓，味更绝，酒体更丰满
不太值钱哦，两瓶估计千元内吧。一是酒降价 二是大成唐窖的本就不贵 三是因为年份较长，否则价还会低。
当前茅台，五粮液都在下调零售价，这影响了老酒的价格，99年52度500ML五粮液，目前市值1800元左右。
0ML五粮液，品相完好，市值1600元左右，当前茅台，五粮液等高端酒零售价在下调，影响了老酒的市值。
52度五粮液（普通装）500ml×6市场价为1109元
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