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“士”的原意是指上古掌管（）的官员，也指周朝的一种等级较低的爵位。到了春秋战国时期，“士”已演变成对有知识、有技能、处在贵族与庶民之间的一个社会阶层的泛称。

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Class C network 200.1.1.0/24 was allocated to an ISP that operated primarily in AsiA.That ISP then assigned this entire Class C network to one of its Asian customers. Network 200.1.2.0/24 has yet to be assigned to any ISP. Which of the following is most likely to be true?（）

A. 200.1.2.0/24 could be assigned to any registrar or ISP in the worlD
B. 200.1.2.0/24 will be assigned in the same g eography (Asia) as 200.1.1.0/24
C. 200.1.2.0/24 cannot be assigned as public address spacE
D. Routers inside North American ISPs increase their routing table size by 1 as a result of the customer with 200.1.1.0/24 connecting to the Internet

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变异可以直接导致适应。

A. 正确
B. 错误

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对同一台电机变频器的频率越高电机转速越高吗？

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x射线机操作员在开启X射线机电源后，应该观察（）是否正常。

A. 射线
B. 电源
C. 自检测程序
D. 传送带

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