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【单选题】
( )也称非私钥加密算法,是指加密密钥和解密密钥为两个不同密钥的密码算法。A.
公钥加密算法
B.
私钥加密算法
C.
综合加密算法
D.
数字证书
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举一反三
【单选题】He would have played football but he __________time.
A.
did not have
B.
would not have
C.
does not have
D.
has no
【单选题】He said that the driver must have had an accident otherwise he ______ by then.
A.
would have arrived
B.
must have arrived
C.
should arrive
D.
would arrive
【单选题】Hardly ______ his parents in such good mood (心情) since he fell into ill.
A.
he saw
B.
he have see
C.
has he seen
D.
does he see
【单选题】Not until the game had begun __ at the sports ground
A.
should he have arrived
B.
would he have arrived
C.
did he arrive
D.
had he arrived
【单选题】A person feels a little green means______.
A.
he has a sick feeling stomach
B.
he does not have something as nice as a friend has
C.
he is very sad
D.
a day in which everything goes wrong
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