【单选题】【消耗次数：1】
以下各种加密算法中属于古典加密算法的是
①
DES加密算法
②
Caesar替代法
③
IDEA加密算法
④
Diffie-Hellman加密算法
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相关题目
【单选题】
以下关于DES加密算法和IDEA加密算法的说法中错误的是:
①
DES是一个分组加密算法，它以64位为分组对数据加密
②
IDEA是一种使用一个密钥对64位数据块进行加密的加密算法
③
DES和IDEA均为对称密钥加密算法
④
DES和IDEA均使用128位（16字节）密钥进行操作
随机题目
【单选题】
Alice is a __________ person and never makes any unreasonable demands.
①
sensible
②
sensitive
③
severe
④
solemn
【单选题】
People are spending more of their income on goods such as cars and household ________ .
①
facilities
②
appliances
③
instruments
④
equipment
【单选题】
As you know, when college students __________ their future employment, they often think of status and income.
①
apply
②
demand
③
anticipate
④
suppose
【单选题】
David and Sheila are unable to have children, but they’re hoping to __________ a little boy.
①
cultivate
②
raise
③
adopt
④
acquire
【单选题】
I don’t know why she avoids __________ her opinion on the subject.
①
to give
②
to be given
③
giving
④
being given
【单选题】
He told me how he had given me shelter and protection without which I __________ of hunger.
①
would be died
②
would die
③
would have died
④
will die
【单选题】
Candidates are required to ____________ the application form first.
①
take in
②
put in
③
fill in
④
give in
【单选题】
Although Jack made a foolish mistake, we __________ at him.
①
ought to have laughed
②
oughtn’t to have laughed
③
ought to laugh
④
should not to laugh
【单选题】
, the sales manager began his report with the statistics of last month’s sales.
①
By now
②
As usual
③
So far
④
At most
【单选题】
What can I do for you, madam?
①
I want a kilo of apples
②
You can go your own way
③
Thanks
④
Excuse me. I’m busy