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【简答题】
如果将一个最大幅值为5．1 V的模拟信号转换为数字信号，要求模拟信号每变化20 mV能使数字信号值最低位(I,SB)发生变化，那么，用________________V位A／D转换器。
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反馈参考答案：
举一反三
【简答题】The author’s attitudes towards future, as is indicated in the beginning of the second paragraph, is one of______. ［A］ reluctant acceptance ［B］ sheer pessimism ［C］ mild optimism ［D］ extreme hopefulness
【单选题】There are______ as many houses in this area as there used to be.
A.
two
B.
twice
C.
second
D.
secondly
【单选题】Which of the following, if true, might be an example of the 'exceptions' cited in the second paragraph of the passage?
A.
Despite the generally grave tone of her verse, Rossetti often used formal and cheerful language in her poetry.
B.
Rossetti, unlike her contemporaries, relied upon long cadences to express her mood as a poet.
C.
Rossetti often preferred rhyme schemes more complicated than those used by her peers.
D.
Rossetti's work demonstrated a more broad-minded intelligence than that of many Pre-Raphaelites.
E.
Rossetti, in spite of her romantic aesthetic, made many more attempts at developing style. less laden with sentimentality than that of other Pre-Raphaelites.
【简答题】根据信号具有的时间函数特性,可以分为确定性信号与 ,连续信号和 , 和非周期信号,能量信号和功率信号
【单选题】One of the functions of the(71)is to store the applications programs { or the various secondaries. The(72)may have similar or dissimilar functions. The same control code received from two different, s...
A.
peripherals
B.
host computer
C.
the interface
D.
the client
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