题目内容

钢在（）的过程中，易产生变形和开裂、氧化和脱碳、过热和过烧、硬度不足等淬火缺陷。

A. 退火
B. 正火
C. 淬火
D. 回火

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If all OSPF routers in a single area are configured with the same priority value,what value dose a router use for the ODPF router ID in the absence of a loopback interface?（）

A. the IP address of the first Fast Ethernet interface
B. the IP address of the console management interface
C. the highest IP address among its active interfaces
D. the lowest IP address among its active interfaces
E. the priority value until a loopback interface is configured

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