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问prep-103(GWD 27-Q2)
103. (GWD 27-Q2)
Electroniccomputer chips made of tiny silicon wafers now regularly contain millions ofelectronic switches. Unfortunately,electronic switches that are this small cannot withstand intenseradiation. Micro-Mechanics plans toproduce a chip that, because it uses only microscopic mechanical switches, willbe invulnerable to radiation damage. Theswitches will, however, be slower than electronic switches and the chip willcontain only 12,000 switches.
Forthere to be a market for Micro-Mechanics's chip as a result of the apparentadvantage described above, each of the following would have to be true EXCEPT:
A.There will be applications in which the speed attainable by an electronicswitch is not essential.
B.Switches used on electronic chips that contain only 12,000 switches are morevulnerable to radiation damage than the switches on Micro-Mechanics's chip willbe.
C.There will be applications for computer chips in environments where the chipsmay have to survive intense radiation.
D.Some devices in which computer chips will be used will have other componentsthat will be able to function during or after exposure to radiation.
E.Manufacturers are able to protect electronic computer chips against exposure tointense radiation, where this protection is necessary.
正确选项是E,我选的是A,不知道A为什么不对。
原文说这种新的switches相对slow,那如果市场认可不就是说明速度快不是必要的吗?
请NN指点,谢谢啦~~~~!!!! |
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