题目内容

子载波间隔()KHZ

A. 15,
B. 20,
C. 200,
D. 500.

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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。

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

变异可以直接导致适应。

A. 正确
B. 错误

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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