题目内容

汽包锅炉因水位低至极限水位而进行紧急停炉后应（）

A. 立即大量进水
B. 禁止进行补水
C. 可少量补水
D. 用“叫水法”判明缺水程度后再决定是否补水

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Which two statements describe characteristics of IPv6 unicast addressing?（）

A. Global addresses start with 2000::/3.
B. Link-local addresses start with FE00:/12.
C. Link-local addresses start with FF00::/10.
D. There is only one loopback address and it is ::1.
E. If a global address is assigned to an interface, then that is the only allowable address for the interface.

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