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【单选题】

以下错误的是( )

A.
实现两个一位二进制数相加的电路叫全加器
B.
数字比较器可以比较数字大小
C.
编码器可分为普通全加器和优先编码器
D.
实现两个一位二进制数和来自低位的进位相加的电路叫全加器
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参考答案:
举一反三
【单选题】It can be inferred from the passage that the author would be more optimistic about optical computing if which of the following were true?
A.
Digital partitioning algorithms could be applied to electronic, and not just optical circuits.
B.
The speed of photons could be shown to be significantly greater than that of electrons.
C.
The precision level in basic operations can be substantially increased without great expense.
D.
The accuracy of electronic circuits used to preprocess input data and post- process data could be greatly increased.
E.
The microchips optical computer systems were shown to require an increasing density of interconnections.
【判断题】The small-signal equivalent Circuits for the BJT can be illustrated by
A.
正确
B.
错误
【单选题】What do you know about acid rain from the report?
A.
It' s a kind of atmosphere.
B.
It' s a kind of air pollution.
C.
It' s a kind of moisture.
D.
It' s a kind of noise pollution.
【简答题】Digital logic and electronic circuits derive their functionality from electronic switches called transistor. Roughly speaking, the transistor can be likened to an electronically controlled valve where...
【单选题】镰刀形红细胞贫血病患者Hb分子中氨基酸替换的种类和位置是
A.
β链第六位Glu→Val
B.
β链第六位Val→Glu
C.
α链第六位Glu→Val
D.
α链第六位Val→Glu
E.
以上都不是
【简答题】Using the concepts of phasor and impedance, sinusoidal circuits can be analyzed in the frequency domain in a manner analogous to resistive circuits by using the phasor versions of KCL, KVL, nodal anal...
【简答题】影响地基土液化的因素主要有哪几方面?
【多选题】在最早出现的复调音乐体裁中,附加声部被称为()。
A.
固定声部
B.
上方声部
C.
下方声部
D.
奥尔加农声部
【单选题】七肽 Ala-Ser-Val-Asp-Glu-Leu-Gly 形成 a - 螺旋,与 Ala 的羰基形成氢键的氨基酸残基是( )
A.
Ser
B.
Val
C.
Asp
D.
Glu
【简答题】某多肽的氨基酸序列如下:Glu-Val-Lys-Asn-Cys-Phe-Arg-Trp-Asp-Leu-Gly-Ser-Leu-Glu-Ala-Thr-Cys-Arg-His-Met-Asp-Gln-Cys-Tyr-Pro-Gly-Glu-Glu-Lys。
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