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【单选题】
蔗糖一般使用浓度在( )之间。A.
2%-5%
B.
1%-10%
C.
0.1%-5%
D.
20%-30%
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皮皮学刷刷变学霸
举一反三
【单选题】(单选)使用DES算法加密的得法步骤是()
A.
将明文分组、初始置换，迭代过程，逆初始置换，输出64位码的密文
B.
初始置换，将明文分组、逆初始置换，迭代过程，输出64位码的密文
C.
初始置换，迭代过程，将明文分组、逆初始置换，输出64位码的密文
D.
将明文分组、初始置换，逆初始置换，迭代过程，输出64位码的密文
【单选题】–Look! A blind man is in the middle of the street. It’s too dangerous. –Let’s help him go the street
A.
across
B.
cross
C.
through
D.
along
【单选题】One of the professor's friends help him by taking care of his children for him.
A.
Right.
B.
Wrong.
C.
Doesn't say.
【简答题】A．A drugstore. B．The name of high building. C．The man who help him. D．The name of a street.
【单选题】下图为肺的局部。肺内除了有很多支气管及其分支外，还有很多血管，它们或是功能血管，或是营养血管。支气管与血管低倍镜观察时很相像。仔细观察图中结构，哪一项说法是正确的？【图片】
A.
1和2是血管，3、4、5是支气管
B.
1和2是支气管，3、4、5是血管
C.
1、3、4是血管，2和5是支气管
D.
1、2、3、4、5都是支气管
【单选题】In the case of Roger, how the social worker Annick help him define himself as an entrepreneur?
A.
She didn't help him at all and he committed suicide.
B.
She got him a job working on the assembly line of a Chinese car company.
C.
She found a course for Roger to train for a new job.
D.
She found a psychologist that he could talk to.
E.
She helped him turn his hobby of carpentry into a freelance enterprise.
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