[分享]至今RC机经----更新至5月5号

ted810

顶，我5.22考，有什么用得着兄弟的地方说一下。我找了一些背景资料，在这个帖子里，有兴趣可以一起研究一下：

http://forum.chasedream.com/dispbbs.asp?boardID=22&ID=320890&page=2

ted810

关于品牌那篇，不知道是不是这个

可能是这篇：

Customer loyalty programs are attempts to bond customers to a company and its products and services by offering incentives – such as airline frequent flyer programs or special credit cards with valuable benefits – to loyal customers. In support of loyalty programs, companies often invoke the "80/20" principle, which states that about 80 percent of revenue typically comes from only about 20 percent of customers. However, this profitable 20 percent are not necessarily loyal buyers, especially in the sense of exclusive loyalty. Studies have demonstrated that only about 10 percent of buyers for many types of frequently purchased consumer goods are 100 percent loyal to a particular brand over a one-year period. Moreover, 100-percent-loyal buyers tend to be light buyers of the product or service. "Divided loyalty" better describes actual consumer behavior, since customers typically vary the brands they buy. The reasons for this behavior are fairly straightforward: people buy different brands for different occasions or for variety, or a brand may be the only one in stock or may offer better value because of a special deal. Most buyers who change brands are not lost forever; usually, they are heavy consumers who simply (35) prefer to buy a number of brands. Such multi-brand loyalty means that one company's most profitable customers will probably be its competitors' most profitable customers as well. (40) Still, advocates of loyalty programs contend that such programs are beneficial because the costs of serving highly loyal customers are lower, and because such loyal customers are less price sensitive than other customers. It is true that when there are start-up costs, such as credit checks, involved in serving a new customer, the costs exceed those of serving a repeat customer.  However, it is not at all clear why the costs of serving a highly loyal customer should in principle be different from those of serving any other type of repeat customer. The key variables driving cost are size and type of order, special versus standard order, and so on, not high-loyalty versus divided-loyalty customers. As for price sensitivity, highly loyal customers may in fact come to expect a price discount as a reward for their loyalty.

charismale

为你们加油鼓劲！

tianyue22

谢谢ted810，考过得nn们谁来确认一下

charlottejue

谢谢了啊^^

Jiggy

谢谢哈尼~
我明天（北美时间5号）就要考了~这简直如雪中送炭哪~~
两只鸟抱窝那个和去年12月机经里面一个有点像，不过是说雌鸟觅食雄鸟抱窝，有两个假设：1一个是说气候原因，2是说是因为predation.不知道具体是不是一道，不过建议搂住看一下吧~呵呵~
还有那个techno nationalism, Techno-globalism12月机经也有类似的，说得是技术national和international~
OK~good luck~一起加油吧~

tianyue22

大家回来添机经呀

i92

thank you

tianyue22

有关气候学家不仅关心全球变暖还关心一种使气温变低的物质

vision1

现在科学家通常比较关注地球变暖的问题，但是现在其实也存在环境变冷的问题。某种工厂排出的物质比较容易形成小水珠，并导致云层的形成，造成热量被反射（大概是太阳到地球的热量被反射掉了吧，原文没有写清楚，也没有仔细想）。
地球两极的冰层上空的环境变冷现象尤其明显。有数据表明除了冬天以外，在其它季节地球的温度实际上没有变化或是下降了。
变冷效应的最大问题实际上是掩盖了地球变暖现象（我想是因为变冷效应可以抵消变暖效应，导致变暖效应不明显，这里出了一道题），如果限制工厂排放那种气体，变冷效应可以得到控制，但是变暖现象就会更突出了。

这道题我也碰到了，那种气体的名称好像是aerosol。其中有一道题问的是作者对以下哪个问题进行了解释，我选择的是C. aerosol是如何影响云的反射率的？（文中有一处细节提到aerosol导致环境变冷的一个原因是它会生成一种比普通的云更白的云，从而使更多的太阳光被反射）

vision2

第一篇是说一种物质，small solid particle pollutant that suspends in the air, generated by the power plant, can cause the "cold climate" effect. It forms cloud in the sky and sheds the earth from getting the sun radiation, creating cooling effect. However, it does not eliminite but mask the green house effect. The cold climate effect, itself, is not dangerous, since it does not prolong: if all the power station should be shut down at one time, the effect will disappear almost immediately. But the masking effect of it on green house effect,which is chronic, can be dangerous, since people tend to underestimate the actual serverity of the green house effect.

vision3 

是在講一個由工廠牌出來的p物質會使地球的氣溫下降,但即使工廠停止運作而不釋放該物質後,氣溫下降的現象會馬上停止,但一般溫室效應卻會持續進行,所以地球並不會因這個物質而對溫室效應有所改善

GavinDing

谢谢！ding