实在是没有读懂。。。请帮我翻译一下

13581939693

Hotco oil burners, designed to be used in asphalt plants, are so efficient that Hotco will sell one to the Clifton Asphalt plant for no payment other than the cost savings between the total amount the asphalt plant actually paid for oil using its former burner during the last two years and the total amount it will pay for oil using the Hotco burner during the next two years. On installation, the plant will make an estimated payment, which will be adjusted after two years to equal the actual cost savings.

Which of the following, if it occurred, would constitute a disadvantage for Hotco of the plan described above?

(A)        Another manufacturer's introduction to the market of a similarly efficient burner
(B)        The Clifton Asphalt plant's need for more than one new burner
(C)  Very poor efficiency in the Clifton Asphalt plant's old burner
(D)        A decrease in the demand for asphalt
(E)        A steady increase in the price of oil beginning soon after the new burner is installed

houhaibo528

H燃烧器,是专门为沥青厂设计的，这个产品非常有效，以至于H公司销售给C沥青厂时，无需付款，只要求付一个差价（这个差价r是在 C沥青厂过去两年使用旧的燃烧器的燃油总花销x 和 C沥青厂将来两年使用H燃烧器的燃油总花销y 的差值）。只要安装，沥青厂就会做一个估计付款，这个付款是根据两年后的实际花销调整的。

下面哪项，如果发生，将会对上述H公司形成不利的局面？
A. 另外一个拥有相似效率燃烧器的生产商进入市场
B. C沥青厂需要多余一个燃烧器
C. C沥青厂旧的燃烧器效率极低
D. 沥青需求降低
E. 新的燃烧器安装后油价迅速稳步上涨

解析：
r=x-y
形成disadvantage,则r减小
两方面原因，即x减小或者y增大
A.B.D.   irrelevant
C. x增大，与题目相反了，形成advantage
E. y增大，correct!

13581939693

谢谢！！！！