[求助]GWD2 17

Drakedragon

Q17:答案是E
Tanco, a leather manufacturer, uses large quantities of common salt to preserve animal hides.  New environmental regulations have significantly increased the cost of disposing of salt water that results from this use, and, in consequence, Tanco is considering a plan to use potassium chloride in place of common salt.  Research has shown that Tanco could reprocess the by-product of potassium chloride use to yield a crop fertilizer, leaving a relatively small volume of waste for disposal.

In determining the impact on company profits of using potassium chloride in place of common salt, it would be important for Tanco to research all of the following EXCEPT:

A What difference, if any, is there between the cost of the common salt needed to preserve a given quantity of animal hides and the cost of the potassium chloride needed to preserve the same quantity of hides?
B To what extent is the equipment involved in preserving animal hides using common salt suitable for preserving animal hides using potassium chloride?
C What environmental regulations, if any, constrain the disposal of the waste generated in reprocessing the by-product of potassium chloride?
D How closely does leather that results when common salt is used to preserve hides resemble that which results when potassium chloride is used?
E Are the chemical properties that make potassium chloride an effective means for preserving animal hides the same as those that make common salt an effective means for doing so?
答案是E,还是不大明白，要是替换的不effective，那不还是说明计划不可行吗？请达人指点.还有为什么我下的GWD和逻辑讨论区的GWD讨论题号对不上呢？

chenae8151

e 说的（做postassium chloride）的化学成分与（做common salt）的化学成分要一样，显然和要不要用pc代替cs无关。

Drakedragon

谢谢姐姐！

还是不大明白，题目中说Are the chemical properties that make potassium chloride an effective means  要是不effective,难道不影响profit吗？

Drakedragon

我明白了，E项是我没读懂，就是说同样作为effective way，两者的化学性质是否相同，那E就没影响了

52element

以下是引用Drakedragon在2008-1-5 13:28:00的发言：
我明白了，E项是我没读懂，就是说同样作为effective way，两者的化学性质是否相同，那E就没影响了

不明白，为什么a不对？