这道题木有人讨论啊！！！！GWD31-16

HilaryYsm

求助啊求助啊！！！！！

16. GWD31-16

In recent years, networks of fiber-optic cable have been replacing electrical wire for transmitting telecommunications signals. Signals running through fiber-optic cables deteriorate, and so the signals must be run through a piece of equipment called a regenerator before being transmitted farther. Light-Line is the leading manufacturer of signal regenerators. Therefore, Light-line is one of the companies that will most benefit if new long-distance fiber-optic telecommunications networks are constructed.

Which of the following, if true, casts the most doubt on the prediction about light-line’s prospects?

A. Telecommunications signals sent along electrical wires can travel much farther than signals transmitted through fiber-optic before needing to be regenerated.

B. Expanding its production of regenerators will require Light-Line to spend proportionately more on labor and materials.

C. The volume of signals that a fiber-optic cable can carry is several thousand times greater than the volume that can be carried by an electrical wire of similar size.

D. There are technologies that enable telecommunications signals to be transmitted without either wire or fiber-optic cable.

E. Several manufacturers are developing regenerator technologies that will allow signals to be transmitted many times farther than at present before requiring regeneration.

HilaryYsm

可不可以这么想：
文章结论是：LL会是最大的获益者
目的：削弱，即LL不会是最大的获益者
LL生产的只能让信号在通过regenerator之后跑得更远，而别人的是让信号在通过regenerator之前就能跑得更远，所以LL的产品就没有市场了

francoisyang

HilaryYsm 发表于 2013-7-14 21:10
可不可以这么想：
文章结论是：LL会是最大的获益者
目的：削弱，即LL不会是最大的获益者

可以。。。。。。。。。。。。。

buchart

这题是攻击assumption， 那公司盈利的前提是信号经常需要续接， 现在如果不需要经常续接信号， 就不需要那个产品， 这公司就完蛋了。