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What is a characteristic of using the Electronic Code Book mode of DES encryption?以下哪一项特征是使用DES中电子密码本?()
- A、Repetitive encryption obscures any repeated patterns that may have been present in the plaintext.反复加密以掩盖任何可能在明文出现的重复模式
- B、The previous DES output is used as input.之前的DES加密输出被用来作为输入
- C、Individual characters are encoded by combining output from earlier encryption routines with plaintext.单个字符从之前明文加密程序的结合输出来进行编码
- D、A given block of plaintext and a given key will always produce the same ciphertext.一个给定的明文和一个给定的密钥将总是产生相同的密文。
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更多 “What is a characteristic of using the Electronic Code Book mode of DES encryption?以下哪一项特征是使用DES中电子密码本?()A、Repetitive encryption obscures any repeated patterns that may have been present in the plaintext.反复加密以掩盖任何可能在明文出现的重复模式B、The previous DES output is used as input.之前的DES加密输出被用来作为输入C、Individual characters are encoded by combining output from earlier encryption routines with plaintext.单个字符从之前明文加密程序的结合输出来进行编码D、A given block of plaintext and a given key will always produce the same ciphertext.一个给定的明文和一个给定的密钥将总是产生相同的密文。” 相关考题
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Which of the following is NOT a characteristic of message filtering?A semanticsB mediaC ethicsD organizational statusE reputation
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143 For a given characteristic in a construction process, the standard deviation associated with production variation is 0.8", and the standard deviation associated with measurement variation is 0.6". The total standard deviation for this characteristic is:A. 1.4"B. 1.2".C. 1.0"D. 0.8"E. 0.2"
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Parents transmit some of their()to their children.A. characteristicsB. characterC. characteristic
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An analog signal's characteristic quantity representing data may 66). at any instant, any value within a continuous(67). For example, an analog signal may follow continuously the values of another physical quantity representing data.A discrete signal is composed of(68)elements in time, each element having one or more characteristic quantities which can represent data. Examples of characteristic quantities are amplitude, waveform,(69), and position in time. A digital signal is a special case of discrete signals, in which data are represented by a(70)number of well-defined discrete values that one of its characteristic quantities may take in time.A.acquireB.collectC.assumeD.fetch
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若某周期信号的一次谐波分量为5sin10^3tV,则它的三次谐波分量可表示为( )。
A. Usin3×10^3t,U>5V
B. Usin3×10^3t,U<5V
C. Usin106t,U>5V
D. Usin106t,U<5V
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There was a very interesting remark in a book by an Englishman that I read recently( )what he thought was a reason for this American characteristic.A.giving
B.gave
C.to give
D.given
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What physical characteristic does a retinal scan biometric device measure?视网膜扫描设备检测哪些人体物理特性?()A、The pattern of light receptors at the back of the eye眼底光受体组织的图案B、The pattern of blood vessels at the back of the eye眼底血管的图案C、The amount of light reaching the retina视网膜受光量
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单选题What physical characteristic does a retinal scan biometric device measure?视网膜扫描设备检测哪些人体物理特性?()A
The pattern of light receptors at the back of the eye眼底光受体组织的图案B
The pattern of blood vessels at the back of the eye眼底血管的图案C
The amount of light reaching the retina视网膜受光量
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They are self-primingB
Decreasing the speed of rotation will decrease the discharge pressureC
Opening the discharge valve wider will increase the discharge pressureD
All of the above
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Group flashingB
Composite group flashingC
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Rude, rush and impolite.B
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WeightB
TemperatureC
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This approach separates technologies based on customer buying patterns.B
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Although this approach supports verticalization, it is not aligned to partner programs.D
Although this approach is aligned to partner programs, it does not support verticalization.
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单选题What is NOT a characteristic of carbon dioxide fire-extinguishing agents?()A
Effective even if ventilation is not shut downB
Will not deteriorate in storageC
Non-corrosiveD
Effective on electrical equipment
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单选题A chemical additive to LPG gives it a characteristic().A
odorB
colorC
pressureD
density
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