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标题: gwd27——2不理解o [打印本页]

作者: pandaeyes 时间: 2007-6-11 00:13
标题: gwd27——2不理解o

Q2: (???)

Electronic computer chips made of tiny silicon wafers now regularly contain millions of 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:

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.

Answer:

作者: 4mmgirl 时间: 2009-10-26 18:49
今天刚好查询这道题，自己弄清楚了，把个人解题过程发上来，仅供参考

题目说机械开关比电子开关好，因为能抗辐射。缺点是反应慢且只能安装12000个开关。

问题大意是以下哪个不能反映出微型机械芯片的优点（ps：没有精确翻译）

应该找跟不能抗辐射，要求反应快，要求装设开关多，这三者相关的选项。

A 不需要快速的开关，排除
B 电子开关若只装12000开关比机械开关更容易受到辐射损害，依然是赞扬机械开关好，排除
C 需要能抗辐射的开关，还是说优点，排除
D 在遭受辐射后，装有机械开关的设备的其他原件依然能够使用。优点，排除
E 一些制造商能够保护芯片不暴露在强辐射中。这样机械开关的优越性就无法体现了，选E

作者: deadknot 时间: 2009-11-10 16:36
哦！原来是这样！看明白了。之前做题时没有看清楚题目，以为是一下判断关于这种advantage的可能性哪一个是true.

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