施工测量用的控制点应按测量方案进行保护,经常校核。特别是工程施工期限长,温差变化大的施工现场。
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A customer is debating whether to use Shared Ethernet versus Virtual Ethernet. Which of the following best describes a key difference between Shared and Virtual Ethernet?()
A. Shared Ethernet runs on POWER4 systems
B. Virtual Ethernet runs on POWER4 systems
C. Shared Ethernet requires a Virtual I/O server and Advanced Power Virtualization
D. Virtual Ethernet requires a Virtual I/O server and Advanced Power Virtualizatio
电子枪中的阴极向外发射电子的方式不包括()。
A. 冷发射
B. 一热发射
C. 场发射
四个网元组成STM-4单向通道保护环,网上最大业务容量为()
A. 1008个2M
B. 504个2M
C. 252个2M
D. 63个2M