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【单选题】
有两种气态脂肪烃的混合气体，它们都能使溴水褪色，1体积该混合烃完全燃烧后，可得3.6体积CO 2 及3体积水蒸气（同条件下测定），则混合烃是（　　）
A.
C 2 H 4 与C 4 H 6
B.
C 3 H 4 与C 4 H 8
C.
C 3 H 6 与C 4 H 6
D.
C 4 H 8 与C 2 H 2
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参考答案：
举一反三
【判断题】喷气燃料一般采用燃烧极限较宽、燃烧比较稳定的煤油馏分
A.
正确
B.
错误
查看完整题目与答案
【单选题】以下选项中不属于异步电机的优点的是( )。
A.
结构简单
B.
坚固耐用
C.
运行可靠
D.
成本高
查看完整题目与答案
【单选题】Certificates are(16)documents attesting to the(17)of a public key to an individual or other entity. They allow verification of the claim that a given public key does in fact belong to a given individu...
A.
text
B.
data
C.
digital
D.
structured
查看完整题目与答案
【单选题】In a public-key cryptosystem,(71)encrypted with the public key can only be deciphered with the private key from the same(72). Conversely,(71)encrypted with the private key can be decrypted only with t...
A.
binarytext
B.
hypertext
C.
plaintext
D.
supertext
查看完整题目与答案
【多选题】下列属于北京清代仿膳宫廷菜是( )
A.
凤尾鱼翅
B.
遍地锦装鳖
C.
金蟾玉鲍
D.
水晶烩
E.
一品官燕
查看完整题目与答案
【判断题】厚朴、黄柏、肉桂的药材中都含有石细胞。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Which of the following about public key cryptography is(are) correct?
A.
Both the public and private key have to be kept secret
B.
For a message encrypted using Bob’s public key, we must use Alice’s private key to decrypt it
C.
Sender and receiver DO NOT have to agree on the keys beforehand
D.
None of the options given
查看完整题目与答案
【判断题】一朵花中由几个分离的心皮构成的雌蕊是属于复雌蕊
A.
正确
B.
错误
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【判断题】一朵花中由几个分离的心皮构成的雌蕊是属于复雌蕊。( )
A.
正确
B.
错误
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【单选题】Which of the following about public key cryptography is(are) true?
A.
The sender and receiver can generate their own keys independently
B.
The public key and private key of a user are mathematically related quantities
C.
A message that is encrypted using the public key can only be decrypted using the private key
D.
All of the options given
查看完整题目与答案
相关题目：
【判断题】喷气燃料一般采用燃烧极限较宽、燃烧比较稳定的煤油馏分
A.
正确
B.
错误
查看完整题目与答案
【单选题】以下选项中不属于异步电机的优点的是( )。
A.
结构简单
B.
坚固耐用
C.
运行可靠
D.
成本高
查看完整题目与答案
【单选题】Certificates are(16)documents attesting to the(17)of a public key to an individual or other entity. They allow verification of the claim that a given public key does in fact belong to a given individu...
A.
text
B.
data
C.
digital
D.
structured
查看完整题目与答案
【单选题】In a public-key cryptosystem,(71)encrypted with the public key can only be deciphered with the private key from the same(72). Conversely,(71)encrypted with the private key can be decrypted only with t...
A.
binarytext
B.
hypertext
C.
plaintext
D.
supertext
查看完整题目与答案
【多选题】下列属于北京清代仿膳宫廷菜是( )
A.
凤尾鱼翅
B.
遍地锦装鳖
C.
金蟾玉鲍
D.
水晶烩
E.
一品官燕
查看完整题目与答案
【判断题】厚朴、黄柏、肉桂的药材中都含有石细胞。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Which of the following about public key cryptography is(are) correct?
A.
Both the public and private key have to be kept secret
B.
For a message encrypted using Bob’s public key, we must use Alice’s private key to decrypt it
C.
Sender and receiver DO NOT have to agree on the keys beforehand
D.
None of the options given
查看完整题目与答案
【判断题】一朵花中由几个分离的心皮构成的雌蕊是属于复雌蕊
A.
正确
B.
错误
查看完整题目与答案
【判断题】一朵花中由几个分离的心皮构成的雌蕊是属于复雌蕊。( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】Which of the following about public key cryptography is(are) true?
A.
The sender and receiver can generate their own keys independently
B.
The public key and private key of a user are mathematically related quantities
C.
A message that is encrypted using the public key can only be decrypted using the private key
D.
All of the options given
查看完整题目与答案
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