中性点经消弧线圈接地的系统正常运行时，消弧线圈是否有电压？
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Which of the following describe private IP addresses?（）
A. addresses chosen by a company to communicate with the Internet
B. addresses that cannot be routed through the public Internet
C. addresses that can be routed through the public Internet
D. a scheme to conserve public addresses
E. addresses licensed to enterprises or ISPs by an Internet registry organizatio
消防员隔热防服整体热防护性能TPP值小于35。
A. 正确
B. 错误
信息系统维护工作中，半数以上的工作是（）
A. 纠错性维护
B. 完善性维护
C. 适应性维护
D. 预防性维护
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