大侠们那~最好 1.-Zack didn't ride a bike go to school,did he -____

HIV化验单,4周化学发光法阴
想得到怎样的帮助：
请有经验的医生告诉我我4周化学发光法阴能能排出多少?
我想问问大侠们!
1、化学发光法算是几代检测方式?
2、四周查的准确度到底有多高?
3、四周阴会不会6周转阳?
4、四周阴6周转阳的都是什么情况?
5、最近一直很乏力、感觉很困,这算是HIV的症状么?

大侠们～123,456.78欧元怎么说?
如果是1，234，567.89欧元该怎么说呢？

有机物成盐时,用盐酸溶液反应,和通入HCI气体一样能成盐吗?盐酸会不会把有机物水解变了另外的物质的啊?望大侠们不惜赐教.
哦、、、不是吧！盐酸不能当催化剂？

棱柱存在外接球吗?大侠们帮帮忙
所有的棱柱都存在外切球吗?
一个四面体还原成斜三棱柱,四面体的所有顶点都是斜三棱柱的顶点,是否就说明这个四面体存在外切球?

求英文作文四篇!
大侠们,为完成任务,写不了四篇写一篇也没关系,主要是字数一定要到,内容要切合
第一篇：What electives to choose 字数100~200
第二篇：写《肖申克的救赎》·《海上钢琴师》·《功夫熊猫》200字左右的故事梗概

为什么地形图进行平移后,等高线的高程属性值变得和原来不一样了?差好多,每次平移的距离和方向不一样,差值都不一样.请大侠们指导.

又是造句,上面各位大侠们给我回复得是又多又好,都有参考价值呀!
我所做的工作,往小了说是钟点工,往大了说叫心里医生.

大侠们帮忙翻译成英文下面句子 我们网站收款采用国际级别,安全,方便的“gspay”收款通道,祝大家购物愉
大侠们帮忙翻译成英文下面句子
我们网站收款采用国际级别,安全,方便的“gspay”收款通道,祝大家购物愉快

谢谢各位大侠们帮忙翻译一下,能读懂的~~~谢!
In addition to the cycle stock, the firm may also maintain an additional amount of inventory, called safety stock, to deal with the potential uncertainty in the replenishment situation. For example, as a given inventory cycle comes to an end, a replenishment order is launched, and the reorder lead-time begins. If the resupply is later than expected, or if the actual demand during the replenishment lead-time is higher than had been anticipated, then the on-hand inventory would be completely depleted, and the inventory system would experience a stockout situation. Demands that occur during the stock out would typically become either backorders (in the case where the customer or user will wait until the resupply arrives) or lost sales (in the case where the demand is lost to the system because the user will not permit the backorder). In commercial and industrial practice, backorders are commonly permitted. At the retail customer level in a system, stockouts usually result in lost sales. In either case, the stockout situation results in poor customer service and the attendant costs. In order to reduce the number of stockouts, and the associated backorders or lost sales, the firm can carry safety stock.
Note also that this safety stock represents a relatively “permanent investment” in inventory. It is only really needed at the end of a replenishment cycle, since that is where the stockout risk occurs. Unfortunately, to have it available at the end of the cycle, it must be available all through the cycle as well. What this means is that the average amount of safety stock on hand over time is very nearly constant. In the diagram below, we see an idealized representation (a so-called inventory saw-tooth) which shows how the on hand inventory level would rise and fall in a replenishment scenario with a highly consistent demand process. In this example, the chosen safety stock level is about half the order quantity; that is, it represents about a thirty-day supply. Thus the total inventory (cycle stock plus safety stock) would represent about sixty days worth of inventory on average, and the total inventory turn rate would therefore be about six times per year.
The safety stock acts as an insurance policy against the chance of stockouts. As such, the appropriate quantity of safety stock will depend on the relative risks and costs in a given situation. This chapter will also develop a set of probabilistic models that will help to determine a cost-effective safety stock strategy in a given situation.

请问大侠们,镀锌钢管与型号厚度分别是：DN200／5MM　150／3.75　100／3.5　125／3.5　80／3.25　50／3
40／2.75　32／2.75　25／2.5重量是每米多少KG.

CAD基础练习题29,圆弧角度是怎么算出来的?（几何好的大侠们快来）
我直接上图,就是想知道画法步骤3里的圆弧角度210是怎么算出来的?

各位英语界的大侠们,帮个忙.写些英语的基础语法给我!
例如：动词,形容词,副词,名词,情态动词等等.在使用时在它们的前后应注意什么|应该加什么词的何种形式!
例如“xx”后面应该加“xx”。“xx”后面应该加“xx+ing“。“xx”后面应该加“xx+ed”。“xx”后面加动词原形、比较级......................越基础越好！

各位大侠们,救命呀~!
各位,谁能帮帮忙,写一下下面的十个对话,每人说十句.谢谢了.
Dialogue 1 You are graduating from your university and now you are talking to your friend about your future plan.
Dialogue 2 You and your friend are discussing how to spend spare time.
Dialogue 3 You just had a wonderful May Day Holiday and now you are talking about it with your classmate.
Dailogue 4 You are working in a technical lab. You have just had a paper published. Your colleague wants to take you out tomorrow evening for dinner to celebrate. And you are very glad to go.
Dialogue 5 You are going to have an informal dinner at your home this Saturday at 6 p.m. You'd like to invite your American friend, Michael. Telephone him to make the invitation.
Dialogue 6 One of your friend will come to visit you and now you are explaining how to get to your dorm.
Dialogue 7 You are a travel agent and now you are introducing some places of interests in China to your foreign customer.
Dialogue 8 You and your friend are introducing your hometowns to each other.
Dialogue 9 Talk about your hobbies and interests.
Dialogue 10 Talk about your favorite sports and players

求不定积分
∫dx/x²(a²-x²)½,算到∫2dt/(1+cos2t)(此处t=asinx),请教大侠们怎么往下算?

英语纠错-刚写了个report,麻烦大侠们帮纠正下语法错误-10分!
Some people believe prisoners should be punished because they “believe that there must be a price for crime”(A press,2008)and it is a fact that prisoners should learn take responsibility for actions.Unfortunately,for most prisoners,their problems can not be sort out by “clinicians in white coats”(Salient,2008).In addtion,prison guards can not control the mutinous prisoners if they don’t do something strict physically.Furthermore,someone believes that deterrence is the one of prison’s main functions,prison must do something physically strict to scare prisoners and people outside due to the fact that the fear of prison’s physical administration can keep people be legal.The previous fact also proved this,“before prison became resorts our crime rate was around a fifth of the current level.”

2个式子较大小的问题,大侠们请帮忙
A=X^4-X^3-X+1
B=-X^4+3X^3-3X^2+1
2个式子比较大小,

大侠们,
下图是由火柴棒拼成的,请你移动两根火柴棒,让它增加四个直角.
▁▁ ▁▁ ▁▁ ▁▁
▏ ▏ ▏
▁▁ ▁▁ ▏▁▁ ▁▁
▏▁▁ ▁▁▏ ▁▁ ▁▁▏
我画的太烂了

跪求 大侠们,急求 回答几个英语问题（用英语）2至4个句子 完整简练,初中水平 实在不行可以选答/标题号/
1）If you were an old man , which kind of life would you choose ? ‘城市或乡村’选一个. why?
2）Try to say something about your hometown.
3）Do you have ang diffculties in self-study?Do you think it is easy to learn by yourself ?
4)What kind of people do you think could be your friends ? How do you maintain a friendship ?
不求长篇大论,但求简单易懂
不求高深莫测,但求有点意义
初中生平
急

我们老师叫我们仿照五柳先生传写一篇自传啊!大侠们帮帮忙..十万火急!
此同学本因有名有姓,名字也不古怪,同学们都知道他的名字,只不过有江字在其名尾,便被同学们你传我我传你,于是就用“江姐”作为他的别号了.这位同学生性活泼,甚至蛮调皮,平时喜欢跟同学说笑,但上课时专心听课,把旁边同学的嘻嘻哈哈当做耳边风.平日作业不少,但只要有时间,就会看书,增长见识,丰富词藻.他在宿舍睡觉时不说话,但同舍的却有说不完的“新鲜趣事”,常能夜以继日,第二天就赖着不起床了.吵吵闹闹的宿舍,他却不以为然,当做是家常便饭,以学习知识和与同学交往为乐,稍微倾诉自己的苦闷.只愿平平安安过完自己这剩下的一年多.
赞曰：黔娄之妻有言：“不戚戚于贫贱,不汲汲于富贵.”其言兹若人之俦乎?衔觞（赋诗,以乐其志.无怀氏之民欤?葛天氏之民欤
五柳先生传最后一段不知道咋仿写了!

数学白痴提问一个非常简单的数学题 希望大侠们不利赐教
4的2007次幂 加上 8的2008次幂 等于多少?解法和利用的公式帮忙带一下

大侠们,帮我看看再,
PPP adapter 宽带连接:
Connection-specific DNS Suffix .:
Description ...........:WAN (PPP/SLIP) Interface
Physical Address.........:00-53-45-00-00-00
Dhcp Enabled...........:No
IP Address............:10.198.1.11
Subnet Mask ...........:255.255.255.255
Default Gateway .........:10.198.1.11
DNS Servers ...........:10.198.1.1
10.198.1.1
NetBIOS over Tcpip........:Disabled
在我的上层是个交换机还是个路由器?掩码怎么成了255.255.255.255 我想自己装个路由器,已经克隆了台式机的MAC了,但还是连不上.

速度的接着追分
第一问会 大侠们看看第二问
(I)如图②,在线段AB上取一点C(BC>AC),如果以AC,BC为边在同一侧坐正方形ACDG与正方形CBEF,连结EG,取EG中点M,设DM的延长线交EF于N,探究DM与FM关系
(II)在图②基础上,将正方形CBEF绕点C逆时针旋转(如图③),使得A,C,E在同一直线上,探究并证明MD,MF的关系

本人刚上高一 同大多数人一样 物理有些许困惑 望大侠们不吝赐教!
首先 物理的正交分解法分解法方面 这里应用到了三角函数
sin37度,53度 cos37度,53度 都等于多少?
还有就是三角函数的常用值麻烦都告诉我 sin cos tan cot 包括他们之间的关系
其次是牛顿定律 什么第一第二第三 这些还都行 到应用就不行了
麻烦各位兄弟姐妹帮忙找个网址 里面最好有视频一类的老师讲课
课内容有讲解 例题等等
如果找的好我会额外加分 200封顶!
是要视频 ***

代词,副词,介词,连词,默单词的时候总是错词性,大侠们怎么记住这些词呀,对了,还有为什么everywhere是副词,而everyone是代词?

请教几道关于托业的题目，求热心的大侠们一定帮忙解答，小的跪谢了！！
we will take whatever action is needed to simplify the decision-making process and increase efficiency.请问这里action之后的is needed to是什么用法？will take 和is needed to有两个谓语，真的不是很理解，求大侠帮忙解答一下好吗。
upon permanent relocation company will allow additional relocation assistance to be mutual agreeded upon within the parameter we have discussed during your visit.
这里的to be mutual agreeded 怎么理解？意思我都知道，但在结构和语法上我不太理解。
upon within在这里的用法我也不太理解，求大侠解说。

把三个大小相同的正方体,拼成一个长方体后,表面积比原来减少了16cm²,求拼成长方体的体积. 大侠们
大侠们救命啊，过了今天就晚撂

刚考完六级 估计又完了 ,麻烦大侠们帮我估估分吧.
我也不知道现在的评分标准是什么,说什么听力保底分100 可是我都考过90多的也有.具体情况如下：听力选择对11个,单词2个,长句算1个.快速阅读对3个.阅读第一部分对4个,阅读第二部分对6个.完型对6个,翻译对3个.作文自我感觉良好.试试看,估计肯定挂了.

我有些数学题不怎么会,各位大侠们,会的帮帮我哈~~小女一定感激不尽.几日后病好好报答~ 第一题 ：21-4/3（我的意思是三分之四）- 4/15 - 4/35 - 4/63 - 4/99 - 4/143 - 4/195 - 4/255=?
第二题 ：19/97+1919/9797分数线（前面一组数的是分子,后面一组数是分母）19191919/97979797=?
第三题 ：在节目游园会上,第一位入场的取1件礼物,再另取剩下的十分之一,第二位入场的取2件礼物,再另取剩下的十分之一,第三位入场的取1件礼物,再另取剩下的十分之一,……直到准备的礼物全部取完.结果发现取到礼物的人拿的礼物数都相等,里礼物的总数为——.得到礼物的人数为——.


就这几道题了.

已知x^2n=3,求(3x^3n)^2的值 大侠们
随便把这个题也解了 若x=-5,y=1/5,求x^2及x^2n(y^n+1)^2的值

一道数学题,问下大侠们 ,
有四个数,分别是：8、12、9、4.经过怎样的运算才能得到24?【至少列3道算式】 各位大侠们,
全部数只能用一次~

先化简,再求值 大侠们
【1】求5x^2-[3y^2+7xy]+[2y^2-5x^2]的值,其中x=0.1,y=-0.2 【2】求15a^2-{-4a^2+【5a-8a^2-[2a^2-a]+9a^2】-3a｝的值,其中a=-1又2分之1

小数怎么解开方程式?
1.X+8分之5=12分之11 2.11分之10-X=3分之2 3.X-6分之5=2分之1
问问大侠们怎么解啊?

这句怎么造呀?多多感谢大侠们呀!
给小的造两个形容词短语做伴随状语的英语句子.多多感谢呀!