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【简答题】
防止蛋白质沉淀的屏障是蛋白质周围有 和 。
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举一反三
【简答题】听对话，回答问题。 1. Who does Mary want to see? A. The policeman. B. Mr Zhang. C. A doctor. 2. What is Mr Zhang doing? A. He is telephoning someone. B. He is having a talk with some guests. C. He went out on ...
【简答题】听下面一段材料，回答第1至2题。 1. Who could the man be? [ ] A. A manager. B. A policeman. C. The woman's husband. 2. Where was the wallet found? [ ] A. In the restroom. B. Under the table. C. On the table.
【判断题】The policeman who appeared on the beat at the beginning of the story was Jim Wells who had come to meet his best friend in his youth, as he had promised to do twenty years ago.
A.
正确
B.
错误
【单选题】部署大中型IPSEC VPN时,从安全性和维护成本考虑.建议采取什么样的技术乎段提供设备间的身份验证()。
A.
预共享密钥
B.
数字证书
C.
路由协议验证
D.
802. lx
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