以下是引用mjfanshome在2007-8-9 10:34:00的发言:Electronic computer chips made of tiny silicon wafers now regularly contain millions if electronic switches. Unfortunately, electronic switches that are this small cannot withstand intense radiation. Micro-Mechanics plans to produce a chip that, because it uses only microscopic mechanical switches, will be invulnerable to radiation damage. The switches will, however, be slower than electronic switches and the chip will contain only 12,000 switches. For there to be a market for Micro-Mechanics’ chip as a result of the apparent advantage described above, each of the following would have to be true EXCEPT:
For there to be a market for Micro-Mechanics’ chip as a result of the apparent advantage described above, each of the following would have to be true EXCEPT: - There will be applications in which the speed attainable by an electronic switch is not essential.
- Switches used on electronic chips that contain only 12,000 switches are more vulnerable to radiation damage than the switches on Micro-Mechanics’ chip will be.
- There will be applications for computer chips in environments where the chips may have to survive intense radiation.
- Some devices in which computer chips will be used will have other components that will be able to function during or after exposure to radiation.
- Manufacturers are able to protect electronic computer chips against exposure to intense radiation, where this protection is necessary.
E 谁能解释一下 总结一下题干的信息:说的是MM(不是mm哦)新开发的芯片与传统芯片相比,可以有效抵御辐射,但是缺点在于速度比较慢。 然后问:如果MM的芯片要凭借它在抵御辐射上的明显优势而占据一定的市场份额(通俗一点说就是卖得出去,而不是孤芳自赏;这里隐含了一个条件:即它的优势不能被它的劣势所抵消,甚至颠覆),下面的哪一项不是必要条件? 一个一个看:A,如果拿速度来PK,MM的芯片肯定出局;B,如果同样是12000S的传统芯片,和MM在抵御辐射上并没有差距,则MM有何优势可言;C,更狠,如果芯片根本不要抵御辐射这一能力,则MM根本在自娱自乐,做无用功;D,干扰性很强的一个选项,我的理解是,需要在辐射条件下使用的设备,光芯片能抗辐射还不够,其他部件也要能正常运转,否则就像光有大脑,没有手足一样。 再看E,如果E成立,则MM的芯片就没有存在的价值了。 |