TTL集成门电路与CMOS集成门电路的静态功耗差不多。()
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What does the author mean by "undisputed"(line 4, para. 1)？
A. Disproved.
B. Debated.
C. Unquestioned.
D. Underrated.
What has been generally accepted as the reason for adolescence？
A. To allow humans to become sexually mature.
B. To give us an extended childhood during which to learn.
C. To allow us to grow to our relatively large size, compared with other primates.
D. So that parents will take more care of their children.
把输出电压短路后，如果反馈不存在了，则此反馈是电压反馈。()
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