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问题 单项选择题

关于解耦联剂，错误的是

A．可抑制氧化反应

B．使ATP生成减少

C．使呼吸加快，耗氧增加

D．使氧化反应和磷酸化反应脱节

E．常见的解耦联剂是二硝基酚

答案

参考答案：A

解析：解耦联剂只是拆开氧化磷酸化，即只氧化不磷酸化，即不产生ATP，其他4项叙述无错误。

单项选择题

关于分光光度计的说法，不正确的是

A．紫外分光光度计使用石英比色皿
B．紫外光分光光度计可检测蛋白
C．可见光分光光度计可检测细菌浓度
D．可见光分光光度计使用玻璃比色皿
E．选定分光光度计测定颜色反应光的波长是260nm
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单项选择题

Public Key Infrastructure (PKI) service providers offer organizations fully integrated PKI-managed services designed to secure Intranet, Extranet, Virtual Private Network (VPN), and e-commerce applications. PKI solutions can enable a number of security services, including p authentication and non-repudiation of transactions.
eToken enables the users of PKI systems to generate and store (101) and digital certificates inside the token, creating a secure environment and allowing full portability and maximum ease of use. eToken Pro can also perform sensitive on-chip (102) operations, ensuring that users’ keys axe never exposed to the PC environment, eToken eliminates the need to store (103) and keys on a hard disk or browser file, or to transmit them across the Internet/Extranet; assuring peace-of-mind and confidence during online communications.
A digital signature is created using the private key of an individual to ensure the Validity of his request. This technology can be used to guarantee (104) of various transactions. The strength of either the authentication level or the digital signature relies on the level of protection offered to the private key. eToken Pro offers the maximum level of security, since it enables the use of the private key for signing and authenticating inside the eToken.
The most secure use of authentication involves enclosing at least one certificate with every signed message. The message (105) verifies the certificate using the CA’s public key. If the sender’s public key is legitimate, the recipient verifies the message’s signature. Digital signatures created with a private key are verified with the digital certificate containing the public key.

A．conformance

B．conference

C．non-repudiation

D．secrecy
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